ALL ABOUT BOATS
Recreational boats are designed to use one or more of three propulsion types. Selfpropelled vessels, including kayaks, rowboats, rafts, and canoes, are designed to be propelled by people using paddles, oars, or poles. Power-driven vessels (powerboats) typically use gasoline or diesel motors for propulsion. Sailing vessels (sailboats) are wind powered, using sails to capture the wind's power (see below).
Powerboat -- a recreational boat typically powered by a gasoline or diesel engine. Powerboats may be subdivided into several types, including utility boats (prams, skiffs, dinghies, inflatables, and utility outboards), runabouts (bowriders, open fishermen, center consoles), cruisers (trawlers, houseboats, larger sportfishing vessels), pontoon boats, and personal watercraft (PWC). Each type has certain uses, characteristics, and limitations. Utility boats, for example, are used as tenders for larger craft and as platforms for fishing and hunting in protected waters. Because utility boats are generally small with limited stability, boaters should enter them carefully to avoid overloading. Caution should also be exercised when moving within these boats to avoid tipping them over. Runabouts are generally fast, maneuverable craft, used for fishing, hunting, cruising, and waterskiing. Cruisers are generally larger, more seaworthy (except for houseboats) craft, equipped with berths (sleeping areas), a head (marine toilet), galley (marine kitchen), and other facilities necessary for living aboard. Powerboats are subject to particular navigation rules and have specific responsibilities under those rules.
Personal Watercraft -- also called "water scooters" as well as a variety of trade names. They are highly maneuverable, fast, fun-to-operate, low-cost, power-driven (jet drive) craft capable of operation in very shallow water. Many PWC are designed for one person, but larger models are available for use by two or three people. PWC are not toys and are governed by navigation rules applicable to power-driven vessels. In addition, most states and many localities have established specific laws that regulate PWC activities, such as prohibition of night operations, speed limitations, prohibitions of specific activities (e.g., wake jumping), limitations on operator age, and education requirements. These popular craft have unique operating capabilities (e.g., high speed, shallow draft), but are also subject to limitations. For example, PWC are steered by altering (via handlebars) the direction of the jet drive, and if power is not applied, steering is lost (the so-called off-throttle steering problem). Operators who are unfamiliar with this design feature may have difficulty controlling the vessel. PWC are designed for operation in relatively calm waters, have limited fuel capacity, and are not highly stable or maneuverable at slow speeds.
PWC operators often focus their attention on nearby waves or wakes, which can impair their ability to maintain a proper lookout. Operators of other vessels should exercise caution when operating in the vicinity of PWC to minimize the likelihood of collision.
Persons using PWC can expect to be thrown into the water and should wear personal flotation devices (PFDs) suitable for PWC use. The ability to swim and knowing how to reboard a PWC from the water are also essential. Many PWC are equipped with engine kill switches rigged to shut the engine off if the riders are thrown from the craft. Fuel management is very important for PWC. Not all PWC are equipped with fuel gauges. Instead, they have reserve tanks and riders need to know how to switch to the reserve tanks and must know the PWC's endurance when using the reserve tanks. Weight and balance are important for PWC operators. Thorough familiarity with owners' manuals and strict adherence to the published limitations are essential. Finally, it is important that operators of PWC (as well as other craft) display environmental sensitivity. Operations in shallow water areas may disturb a fragile ecosystem and its inhabitants.
Sailing Vessel -- as noted above, this is a wind-powered vessel that uses only sails for power. Many sailboats are also equipped with gas or diesel motors for use (either as primary or supplemental power) when winds are light or from the wrong direction, for docking or other precise maneuvering, and for operation in waters (e.g., certain canals) where use of sails is prohibited. A sailboat is a power-driven vessel, as defined in the navigation rules, when the motor is in operation, and must observe regulations applicable to this type of vessel. When powered solely by sail, a sailboat is termed a sailing vessel and is subject to other specific regulations and (because of its limited maneuverability) enjoys certain privileges under the navigation rules. Various types of sailboat are discussed later in this text.
Sailboard -- a modified surfboard with a mast attached that holds a sail and is capable of swiveling. They are one-person craft, so the "skipper" operates the sail, steers, and acts as lookout. Visibility on these highspeed craft may be limited when the operator is positioned behind the sail. Skippers of other craft should understand this limitation and exercise caution when operating in the vicinity of sailboards.
The hull is the basic boat minus the rigging. The hull comprises the bottom, topsides, buoyancy tanks, and deck. One way to classify boats is based on hull design. Displacement-hull boats move through the water and push it aside or displace it. Planing-hull vessels move faster and, after gaining speed, ride more nearly on top of the water. All boats at rest or moving slowly are displacement boats. Each displaces a volume of water equal in weight to its own weight when operating in displacement mode.
A displacement-hull vessel always displaces a volume of water equal to its own weight, regardless of its speed. At slow speeds, it is easy for a displacement-hull boat to push the water aside, forming a bow wave. As speed increases, the bow wave becomes higher and the boat tries to climb it. But the boat is not designed to do this so there is a practical limit to its speed. Displacement vessels with longer waterlines have the capability of attaining higher speeds as long as they have adequate power. Most sailboats (except sailboards and certain other light-weight boats such as racing dinghies), tugs, freighters, and true trawlers are displacement-hull vessels. The theoretical upper limit (the hull speed) of a displacement hull can be calculated with relative precision. Hull speed in knots (nautical miles per hour) is approximately 1.34 times the square root of the waterline length in feet. Thus, a displacement-hull vessel with a waterline length of 36 feet has a maximum speed of approximately 8 knots (9.2 statute miles per hour). Despite their slow speed, displacement-hull vessels have many advantages and special uses. They are steady and comfortable and can handle rougher water than their planing hull cousins (see below). Engine-powered displacement-hull vessels are typically highly fuel efficient.
Above hull-speed a planing-hull vessel rides on its bow wave or "on-plane." When planing, it uses most of its power to move forward instead of pushing the water aside and displaces a volume of water less than its own weight. Generally, flatter hull bottoms allow boats to plane more easily. Runabouts, speedboats, sportfishing boats, and PWC are examples of planing-hull vessels. Powerdriven planing-hull vessels are generally less fuel efficient than displacement-hull vessels of comparable size and weight.
As the name implies, a semidisplacement hull has both displacement and planing characteristics. Up to a certain power and speed, a semidisplacement hull behaves as a displacement hull. Beyond that point, the hull can rise to a partial plane. Increasing the power of a semidisplacement hull vessel increases its speed. It never gets fully "on top," however, and is not as fast as a vessel with a true planing hull. Most trawlers and many cruisers fit into this category.
Multihull vessels include sailing catamarans (two hulls) and trimarans (three hulls). Although technically a displacement-hull vessel, a multihull is able to escape the restriction of hull speed because the narrow hulls create very little wave resistance and because this type of vessel typically carries a great deal of sail. These boats may be difficult to maneuver at docking speeds because they lack the momentum that heavier, ballasted boats use to maintain forward motion.
There is no single, all-purpose, perfect hull design. Boat builders strive to find a happy compromise among conflicting design objectives.
THE BASIC BOAT
Learning to sail is rather like going to a foreign country. Everyone seems to speak a different language. But don't let this trouble you, for the language will soon become familiar. Once you cast off from shore, your boat becomes a self-contained world. To function within that world you need to learn the parts of your boat and their uses. Go over them often so there is no question in your mind.
Keel -- a weighted fin that, when attached to the bottom of a sailboat, keeps the boat from slipping sideways in the water and allows it to sail upwind.
Centerboard -- A sailboat without a keel may have a centerboard. A centerboard is a wooden or metal fin housed in a centerboard trunk that serves the same purpose as a keel. It can be lowered to overcome the boat's lateral motion.
Beam -- the maximum width of the hull.
Deck -- the horizontal upper surface of the boat.
Stern -- the back of the boat.
Bow -- the front of the boat.
Aft, after -- toward the stern.
Forward -- toward the bow.
Windward -- toward the wind.
Leeward -- away from the wind.
Aloft -- overhead.
Rudder -- the fin at the stern of the boat used for steering.
Tiller -- the wooden or metal steering arm attached to the rudder. It is used as a lever to turn the rudder.
Tiller extension -- a wooden or metal pivoting extension attached to the tiller. It is usually found in dinghies and enables the skipper to steer accurately while hiking out.
Wheel -- On larger boats the wheel replaces the tiller and is used to turn the rudder.
Mast -- the vertical pole or spar that supports the sails and boom. The top of the mast is called the masthead.
Boom -- the horizontal spar which is attached to the mast to support the bottom part of the mainsail.
Hiking out -- leaning the weight of the crew over the windward side to help keep the boat on an "even keel."
Port -- the left side of the boat as you face forward.
Starboard -- the right side of the boat as you face forward.
Mainsheet -- the line used to make the major adjustments to the trim of the mainsail.
Boom vang -- an adjustable tackle or rod that prevents the boom from lifting. A rodtype boom vang also keeps the boom from dropping on deck.
Lifelines -- plastic-coated wires enclosing the deck to keep the crew from falling overboard. Lifelines are suspended from metal supports, called pulpits and stanchions.
Traveler -- a slide, running across the boat, to which the mainsheet is led. The crew can change the trim of the mainsail by adjusting the slide position.
Topsides -- the sides of the hull above the waterline.
The standing rigging is a collection of wires that supports the mast. On more sophisticated boats, the standing rigging is more complex and can be adjusted to optimize a sail's performance. The basic standing rigging consists of:
Headstay -- a wire that runs from the top of the mast (or near the masthead) to the bow and onto which the jib is attached. It supports the mast, preventing it from falling backwards.
Backstay -- a wire that runs from the top of the mast to the stern and supports the mast.
Shrouds (sidestays) -- wires that run from the masthead (or near the masthead) to the sides of the boat to support the mast and prevent it from swaying.
Sails -- are the power supply of the sailboat. They are most frequently made of Dacron, a synthetic fiber, used because of its resistance to stretching. Other materials such as nylon, Mylar, and Kevlar are also used in sailmaking. Types of sails are:
Mainsail -- the primary and most easily controlled source of sail power, attached along the front edge to the mast and along the bottom edge to the boom.
Spinnaker (chute) -- a balloonlike sail, often colored, used when running with the wind.
Jib (headsail) -- the sail set forward of the mainsail and attached to the forestay using jib hanks.
Genoa (headsail) -- a large jib with an overlap aft of the mast.
Each part of a sail has a name:
Head -- the top corner of the sail.
Tack -- the forward lower corner of a sail.
Clew -- the back lower comer of a sail.
Luff -- the leading edge (front) of a sail. The luff of the mainsail attaches to the mast, and the luff of the jib attaches to the forestay.
Foot -- the bottom edge of a sail. The foot of the mainsail attaches to the boom. The foot of the jib is unattached and consequently more difficult to control.
Leech -- the trailing (back) edge of a sail.
Battens -- support sticks held in pockets to keep the leech from flapping and to add support to the sail.
Draft -- the fullness or roundness of a sail.
The running rigging consists of ropes (called lines) that pull the sails up and adjust the sails' shape. Unlike the standing rigging, the running rigging is not stationary. When sailors speak of "trimming" sails to find the most efficient shape, they mean that the sheets are being let out (eased) or pulled in (trimmed).
The running rigging includes:
Halyards -- lines used to raise (hoist) sails and hold them up.
Mainsheet -- a line used to trim the mainsail; it is led through a series of blocks to form a block and tackle.
Jib sheets -- two lines, one on each side of the boat, to trim the jib.
The topping lift, which prevents the boom from dropping on deck, is part of the running rigging. The downhaul, outhaul, and cunningham are also running rigging. We will discuss them later.
Halyards attach to the top or head of a sail. Halyards run through the top of the mast by means of a sheave or block (pulley) and then down to the bottom of the mast. A halyard can be internal, inside the mast, or external, outside the mast. The main halyard raises the mainsail and the jib halyard raises the jib.
Halyards sometimes terminate at the base of the mast, requiring the crew to be at the mast when hoisting and lowering the sails. A better system is to have the halyard lead back to the cockpit through turning blocks and padeyes (blocks and eyes through which a line is threaded to give it a clear, safe run). The sail can then be hoisted by the crew without leaving the safety of the cockpit.
Most boats have winches on the mast or on the deck to aid in the hoisting of sails. Winches pull on lines mechanically and safely. They consist of a drum that rotates only in a clockwise direction around which the line is wrapped and a crank handle to rotate the drum. Winches are discussed in the Skills Afloat section of this part.
Sheets control the shape of the sail and sail trim or position of the sail. The mainsheet and jib sheets are quite different from one another. The mainsheet is a multiplepart block and tackle used to increase an individual's pulling power. By giving a sheet a 2:1, 4:1, or 8:1 advantage, the device lets you trim your sails more easily. This is particularly helpful in strong winds.
The jib sheet consists of two lines connected to the clew of the jib that lead along each side of the boat to the cockpit. Although the actual leading of the jib sheets varies from boat to boat, the system illustrated in this book is among the most common.
The jib sheets are attached to the clew of the jib with a knot called a bowline. This knot provides a temporary loop that allows the jib sheet to be securely attached to the sail. The key feature of the bowline, like any properly tied knot, is that it unties remarkably easily, even after being under strain for days at a time.
The other end of the jib sheet leads through a block (a pulley), or series of blocks, around a winch, to a cam cleat or deck cleat (a wooden, plastic, or metal fitting used to secure lines). The crew controls the sail trim by pulling in or letting out the sheet.
Since the jib sheets are led along both the windward (toward the wind) and the leeward (away from the wind) sides of the boat, they are referred to as the leeward and windward sheets. The leeward sheet is led along the leeward side of the boat. It is the working sheet and will be taut when the jib is in use; the windward sheet is the nonworking or "lazy" sheet and will be slack. Of course, as the side of the boat the wind is blowing from changes, reference to the windward or leeward jib sheets also changes.
At the tail end of the jib sheet will be a figure eight or stopper knot. The knot will keep the line from pulling through the turning block or fairlead.
The topping lift, or boom lift, holds the boom off the deck when the sail is not being used. If the mainsail is lowered without the topping lift attached, the boom will fall to the deck.
A topping lift should be adjustable, either from the cabin top or from the boom itself. One of the simplest types of topping lift attaches to the backstay and consists of a few feet of wire with a clip or shackle on the end. Although this type of topping lift serves the basic purpose of support for the boom, it is difficult to use and almost impossible to adjust or disconnect once the sail has been raised.
RESPONSIBILITIES OF THE SKIPPER AND CREW
The terms helmsman and skipper are often used interchangeably; however, they are not the same. The skipper (whether on deck, at the wheel, or taking a nap below) is the person responsible for the safe operation of the vessel. The helmsman is the person steering the boat, a role which may be performed by any member of the crew, including the skipper. The crew (including the helmsman) is responsible for assisting the skipper in the safe operation of the boat.
Traditionally, the captain of a vessel is responsible for the safety of the vessel and all persons aboard. This is particularly true on commercial vessels. However, on a recreational boat the operator (skipper) assumes many of the responsibilities of the captain. If the boat is boarded by federal, state, or local law-enforcement personnel, the skipper must answer for the condition and conduct of the boat. For example, the skipper is responsible for ensuring that:
* The boat carries all required safety equipment.
* Proper lights are displayed at night.
* Correct sound signals are used when required.
* No-wake zones and restricted areas are correctly observed.
* The boat isn't operated in a manner that will endanger life, limb, or property of any person. Negligent or grossly negligent operations could include: operating in a hazardous manner, operating in a designated swimming area, excessive speed in the vicinity of other boats, hazardous waterskiing practices, overloading, overpowering, boating in hazardous weather, bowriding (or riding on a gunwale or transom), and operating under the influence of alcohol or drugs.
* The boat complies with the rules for preventing collisions.
* Proper registration numbers are displayed and the certificate of number is carried on board.
* An accident report is prepared if the boat or persons aboard are involved in an accident that involves a fatality (or disappearance), injuries requiring more than first aid, more than $500 damage to vessels or property, or the complete loss of a vessel.
* Assistance is rendered to persons overboard and to other boats needing help. (The operator or any person in charge of a vessel is obligated by law to provide assistance that can be safely provided to any individual in danger at sea. The Good Samaritan rule in the Federal Boat Safety Act of 1971 will protect you from liability if you act reasonably and prudently. The operator is subject to a fine and/or imprisonment for failure to do so.)
* Trash, oil, and other pollutants are properly disposed of, and that permanently installed marine toilets comply with United States Coast Guard (USCG) regulations.
* The owner is responsible along with the operator if an injury occurs or if the boat causes damage.
The above list is illustrative, not exhaustive. It identifies some of the specific required actions and responsibilities of the skipper. Being a good skipper, however, entails more than satisfying the specific requirements listed above. It is also a matter of attitude. To a degree unmatched by many other forms of transportation, passengers and other boaters are dependent upon the skipper's skills and responsible approach to boating. In boating, responsibility and fun go hand in hand.
To ensure the safety of the crew, the skipper must organize the operation of the boat so that tasks will be performed efficiently. This means delegating jobs according to the abilities of different crew members.
As a skipper, be tactful when giving an order; as a crew member, be willing and able to obey all reasonable commands. The great General "Stonewall" Jackson once said, "Obedience to orders, instant and unhesitating, is not only the life blood of armies and navies, but the security of states." This statement applies perfectly on sailboats.
Give orders in a friendly but firm tone of voice. Never shout: it only makes the crew nervous and leads to mistakes. Explain commands to inexperienced crew members in advance so they feel more relaxed. Give commands in exact terms. For example, ask for sails to be trimmed in four inches instead of "a little." By putting commands in precise terms, you leave no doubt as to what you want. The best skippers are those who ask the advice of the rest of the crew. However, in times of quick action, the crew must obey commands immediately and ask questions later.
One of the greatest yachtsmen of all time, Ted Turner, establishes the role of each crew member when that person steps on board the yacht. He clearly defines the job of every person on the boat. In case there is an emergency or an important maneuver, each person is assigned a specific task. Turner has earned great loyalty from his crews over the years because they have faith in his ability to make clear decisions in the heat of baffle. His secret? Taking good advice when asked for, assigning specific duties, and motivating the crew by giving everyone on board a reason to excel.
This book will introduce and develop the skills you must have to be a good skipper and crew member. Whether you are tending docking lines, trimming the mainsail, or maneuvering through a crowded marina, each task undertaken and learned in this course will make you a better and safer sailor. More on the duties and responsibilities of a skipper will be discussed in Part Six, Basic Coastal Cruising.
ALCOHOL AND DRUG ABUSE
The National Transportation Safety Board (NTSB) estimates that between 37 and 76 percent of all boating fatalities can be traced to operators with measurable levels of alcohol in their blood. Moreover, studies show that, compared with sober operators, legally drunk boaters are ten times more likely to be fatally injured.
Alcohol consumption while boating is problematic for several reasons:
* Boating exposes the operator to natural stressors (e.g., noise, shock, extreme temperatures, vibration, sun, glare, and wind) that increase fatigue, decrease dexterity, and interfere with judgment. Alcohol exacerbates these effects.
* Complex reaction time (that associated with more difficult tasks or divided attention) is increased with moderate alcohol use. In tasks requiring vigilance (i.e., prolonged periods of task concentration or attention to task) accuracy decreases and the time required for correct response increases with blood alcohol content.
* Alcohol impairs the psychomotor performance of tasks that are vital to safe boat operation, such as steering and signal anticipation. Visual acuity is reduced in low contrast situations such as twilight and night conditions.
* Fatigue increases with alcohol consumption.
* Intellectual functions are sensitive to the effects of alcohol. Verbal performance, problem solving, and short-term memory are adversely affected by alcohol.
* Balance is adversely affected by alcohol, increasing the likelihood of falling from the boat.
* Judgment is adversely affected by alcohol. Persons under the influence appear to be willing to take greater risks and to underestimate their degree of impairment.
* These are all excellent reasons to refrain from consumption of alcohol while boating. Nonetheless, the American Red Cross National Boating Survey reveals that 29 percent of all boaters reported using alcohol during typical outings, and the percentages for operators of cabin cruisers and cabin sailboats were higher, 44.6 percent and 41.6 percent, respectively.
Here are some ideas to reduce alcoholrelated risks:
* Refrain from alcohol consumption until safely tied up at the end of the day. This is the best strategy.
* Limit consumption to one drink or less per hour.
* Eat before and while drinking.
* Alternate between drinking alcoholic and nonalcoholic beverages. Use nonalcoholic beverages to quench thirst before drinking alcoholic beverages.
* Don't invite people who characteristically drink to excess.
* Don't bring large amounts of alcohol.
* Don't stop at waterside drinking establishments.
Operating a vessel while intoxicated became a specific federal offense effective January 13, 1988. The final rule set standards for determining when an individual is intoxicated. If the blood alcohol content (BAC) is 0.10 percent (0.08 percent in some states) or greater for operators of recreational vessels being used solely for pleasure, violators are subject to a civil penalty not to exceed $1,000 or a criminal penalty not to exceed $5,000, one-year imprisonment, or both. State laws may have other penalties, such as forfeiture of vessel (or motor vehicle) operating privileges. Most states have an implied consent law and refusal to take a blood alcohol test can be used against the boater.
A 160-pound person who consumes five drinks (twelve ounces of beer equals five ounces of wine equals one ounce of eighty-proof liquor equals one drink) in a two-hour period will raise his or her BAC to 0.1 percent.
Intoxicating drugs may not show up in a sobriety test designed for alcohol. However, many jurisdictions give law-enforcement officers great latitude in determining the probability of drug use by operators. If behavior and/or other outward signs indicate that drugs may be present, the officer may charge the operator with boating under the influence (BUI).
FEDERAL REQUIREMENTS FOR RECREATIONAL BOATS
As noted above, the prudent skipper ensures that the recreational vessel carries all required safety equipment (e.g., personal flotation devices, fire extinguishers, appropriate lights, sound-producing devices) and operates the vessel in full conformity with the navigation rules (both topics are covered in parts two and five). Additionally, the operator must comply with other federal and state requirements, such as registration or documentation, numbering, display of capacity information, ventilation systems, use of approved backfire-flame arresters, appropriate pollution placards, and marine sanitation devices (MSDs).
REGISTRATION AND DOCUMENTATION
A vessel of five or more net tons may be documented through the USCG. Documentation is a form of national registration available to citizens or corporations of the United States. In the documentation process, USCG issues papers similar to those issued for large ships. Bills of sale, mortgages, and other papers of title may be recorded with federal authorities, giving legal notice that such documents exist. Documentation may provide additional security and aids in financing and transfer of title. Many states also require that you register documented vessels (see below). If a documented vessel is registered, a decal issued by the state is displayed in lieu of the usual registration number. The decal must be in a clearly visible location. The name and hailing port of a documented vessel must be displayed on an exterior surface that is clearly visible (typically a transom). The original documentation papers (not copies) must be carried aboard.
If your vessel is not documented, registration in the state of its principal use is probably required. Check with state authorities to determine if your vessel must be registered. If you use it mainly on an ocean, gulf, or other similar water, register it in the state where you moor it. Registration fees vary with state, vessel length, and type of propulsion. The period of registration also varies with the state and may be one year or more.
All states, except Alaska, register boats. (The USCG issues the registration numbers in Alaska.) You must have the original registration certificate (certificate of number) aboard (not a copy) when the boat is in use. Some states will issue duplicate originals for a small additional fee for operators concerned over the certificate's security or susceptibility to water damage.
An alpha-numeric sequence (the registration number) is provided on the certificate of registration. It usually consists of three groups: two letters (indicating the state), up to four numerals, followed by one or two additional letters. Registered vessels must have their registration number painted or permanently attached on both sides of the forward half of the hull. This registration number must be clearly visible in block characters (of contrasting color to the background) at least three inches high, which can be read from left to right. The three character groups must be separated by a space or hyphen. Most states issue a decal, along with the registration, which identifies the expiration date of the registration. This decal must be affixed in close proximity to the registration number.
HULL IDENTIFICATION NUMBER
A boat manufactured for use in the United States after 1972 must have a hull identification number (HIN) permanently attached to the transom on the starboard side, above the waterline. The number must also be located in an unexposed location. The vessel's HIN should be recorded by the owner -- it may be helpful in identifying a lost or stolen boat. Moreover, the HIN is required on many state registration forms.
Manufacturers must put capacity plates on most monohull recreational motorboats less than 20 feet long. Sailboats, canoes, kayaks, and inflatable boats are exempt. Outboard boats must display the maximum permitted horsepower of their engines. The plates must also show the allowable maximum weight of the people on board. And they must show the allowable maximum combined weights of people, motors, and gear. Inboards and stern drive boats need not show the weight of their engines on their capacity plate.
The capacity plate must appear where it is clearly visible to the operator when getting underway. This information reminds the operator of the vessel's maximum capacity under normal circumstances. On windy days or in rough water, don't load your boat as heavily as on calm days in smooth water. Overloaded boats can swamp, capsize, and sink. Law-enforcement officers may consider operation of an overloaded boat to be an act of reckless endangerment or negligent operation. For home-built or other boats not required to have a capacity plate the following formula can be used to estimate the maximum number of persons who can safely ride in the boat on a calm day. Multiply the length (in feet) by the width (in feet) and divide this by 15 -- round the result down to the nearest whole number. For example, a boat with a length of 20 feet and a beam of 6 feet could safely carry (20 x 6)/ 15 = 8 persons on a calm day. This formula assumes that the average weight of a person is 150 pounds -- adjustments should be made if this assumption is incorrect. Note that the length of the boat is measured along a straight line from its bow to its stern. The length does not include bowsprits nor does it include rudders, brackets, outboard motors, diving platforms, or other attachments.
Remember that the number of seats in a boat is not a reliable indicator of how many people the boat can safely carry!
The largest cause of fire and explosions aboard recreational boats is gasoline vapor collecting in the lower compartments of the boat. Gasoline vapor is heavier than air and sinks to the lower compartments. If a flow of air is not present to ventilate gas vapors, a spark from a source such as a cigarette ash, an electric switch, or static electricity could cause trapped gasoline vapors to explode.
Technology has not as yet provided us with a completely foolproof ventilation system. However, natural or powered ventilation systems are required by law because they significantly reduce the chance of explosion. Both powered and natural ventilation are required for boats with permanently installed gasoline engines that have cranking motors. An engine compartment is exempt if its engine is open to the atmosphere. Diesel-powered boats are also exempt.
Fresh air is directed into engine and fueltank compartments using wind scoops (cowls), often assisted by electric blowers. A tube leads to the exhaust cowl where the collected vapor is vented overboard. The tubes connecting the lower areas with the intake and exhaust cowls should be at least two inches in diameter. A powered blower should have a marine-type, spark-proof switch.
Ventilation systems are particularly important for inboard, engine-powered sailboats. The engine location in the lower portion of a deep hull can make routing the ventilation ducts very difficult. It is important that ventilation in this type of boat not be neglected. Because sailboats spend a great deal of time operating with the engine shut down, engine "breathing" doesn't help ventilate the engine compartment. When the wind dies and it's time to start the engine, the engine compartment must be free of vapors.
A ventilation system will not remove spilled fuel or oil from the bilge or bottom of a boat! Wipe up any spilled fuel or oil (and dispose of it properly)! Remember the following points:
* Always ventilate the engine compartment before turning on any switches or starting the engine.
* Operate the bilge blower for at least five minutes before starting an inboard engine. If the blower fails to operate, fix or replace it before attempting to start the engine.
* Even if your boat is equipped with fuel-vapor detectors, sniff your bilges. Your nose is the best fuel and vapor detector.
A Brief Digression: Safe Fueling Procedures
While on the subject of ventilation, it is useful to provide a few pointers on safe fueling procedures. Most boat fires occur just after fueling and most are preventable. Fuel can leak from punctured hoses, lines, and tanks. Fittings, loosened through normal operation, can also fail. Periodically inspect the entire fuel system and tighten fittings when necessary. Gasoline that requires an oil mixture (for two-stroke motors) should have the oil added on shore in a separate container. (This procedure minimizes the impact of an oil spill as well as reduces hazard.) The gas-oil mixture should then be poured into the boat's tank. Leave air space for expansion at the top. If it is necessary to keep additional gasoline onboard, keep it in a safety-approved tank with adequate air supply. All combustibles should be kept away from the boat's engine(s) and batteries.
Here are key safety tips to follow when fueling. You may wish to summarize these in a checklist for onboard retention and review:
* Ensure that you are familiar with the locations of all fire extinguishers.
* Label your fuel fill to prevent mistaking it for the water or sewage tank.
* Portable tanks must not be fueled on the boat.
* Refuel during daylight hours to minimize the likelihood of spills.
* Turn off motor or any other source of sparks or heat. Electrical equipment and compressed cooking-gas tanks should all be off.
* Close all hatches and ports and seal off all cabin areas. Ventilating cabins during fueling can allow fumes to be trapped below.
* Ask your crew to stand on the dock away from the fueling operation.
* No smoking!
* Verify that the correct fuel pump (gas or diesel) is being used. Hold the spout or nozzle firmly against the tank or filler pipe. This keeps the two grounded and prevents sparks from static electricity. Remember that the automatic shut-off on the fuel nozzle may not work on your boat. Never leave a fuel hose unattended while refueling!
* Do not overfill the tank (see below). To minimize the likelihood of a spill, estimate the amount of fuel that you will need and have one of your crew call out the amount delivered if you cannot see the dial on the fuel pump.
* Wipe up all spills. Your clean-up rags should be allowed to dry in the open air, not in the boat. If rags must be stored, store them in an air-tight container. Better yet, use disposable rags.
* When fueling is completed, open all hatches and ports. Enclosed areas should be allowed to air-out for at least five minutes. Use the blower for at least five minutes before starting the engine.
* Check all fuel lines and connections again for leaks. Check enclosed areas for fumes. Start the engine and invite your crew back aboard.
Gasoline engines, other than outboards, must have acceptable means of backfire control. Backfires occur when flames from an engine exit through the carburetor instead of the exhaust system. A backfire control keeps the flames from entering the engine compartment. The usual method of controlling backfires is by a backfire-flame arrester mounted atop the engine's carburetor. A flame arrester works by rapidly dissipating the heat of the flame. Thus, the flame is kept out of the engine compartment. An acceptable backfire-flame arrester bears a Coast Guard approval number, or it shows that it complies with Underwriters Laboratories Standard UL 1111. The label may also state that it complies with the Society of Automotive Engineers Standard SAE J-1928.
To be effective, flame arresters must be free of oil, grease, and dirt. Grease dissolving detergents are available for this purpose. Other than periodic cleaning, backfire-flame arresters do not need servicing or replacement.
MARINE SANITATION DEVICES
There is no requirement to equip your boat with a marine toilet. However, installed toilets must have Type I, II, or III marine sanitation devices (MSDs), certified by the Coast Guard. Most pleasure boats have Type III MSDs, which use holding tanks to contain waste until it can be properly disposed of onshore. Vessels over 65 feet long must use Type I or Type II MSDs. Pumpout stations -- shoreside facilities designed to empty the holding tank -- can be found at many marinas.
Additives are often used to sanitize and deodorize waste while it is stored onboard. These additives may contain chlorine, quaternary ammonia, or formaldehyde. Marine life and septic systems can both suffer when these substances are introduced. Boaters should make an effort to use products that do not contain environmentally damaging substances.
Some systems use Y valves to direct waste into the holding tank or directly overboard. Boats with a Y valve that can direct waste overboard must use special caution on inland waters, in a "No-discharge Area," or within the three-mile coastal limit. Consult state and local rules regarding the operation of this system.
For too many years, it was thought that the sheer volume of rivers, bays, and oceans was so great that there was little man could do to cause significant environmental damage. Today, we recognize the fallacy of that assumption and understand that we all share a responsibility to help keep our waters clean and to avoid damage to fragile wetlands and other sensitive areas. There is much that all boaters (both power and sail) can do to reduce environmental impacts. Here are a few suggestions:
* Observe dumping restrictions (see below). These are easily complied with and can significantly reduce environmental impacts. Stow all loose items, plastic bags, drink cups, and other articles properly so that they do not fall into the water. Use onshore toilet facilities instead of MSDs whenever possible.
* Develop a waste-management plan that specifies the measures you will take to comply with applicable laws and the procedures you will use to collect, process, and store waste for proper disposal. Identify the person responsible (usually the skipper) for implementing this plan. Vessels more than 40 feet in length with a galley and berths are required to have such a plan. A simple written statement to the effect that the skipper is in charge of trash and trash disposal in accordance with the Act to Prevent Pollution from Ships (MARPOL Annex V) is all that is required.
* Check the bilge frequently for signs of oily wastes and use approved absorbent pads to collect this waste. (This is a good safety measure as well as an environmentally sound practice.) If you spill fuel or oil into the water, do not disperse it with detergent or soap. This only sends the problem down to the seafloor where it becomes more toxic and more difficult to clean up.
* Keep engines properly tuned to reduce hydrocarbon emissions. This will improve your fuel efficiency and lower fuel bills as well. Clean your boat's bottom regularly to reduce drag and improve performance.
* Exercise care when fueling. To minimize the likelihood of a spill through the vent tube, do not fill fuel tanks to the top.
* Use only environmentally friendly antifouling bottom paints.
* Use environmentally friendly cleaning products (look for the words phosphate-free and biodegradable on the label) when washing your boat. Rinsing your boat with clean water after each use will reduce your need for cleaners and heavy-duty products.
* Do not anchor in rubble, coral reefs, or sea grass. This practice is unsafe and will damage the underwater environment.
* Stay in marked channels whenever possible to lower the likelihood of running aground and damaging bottom vegetation.
* Take steps to prevent the introduction of zebra mussels into uninfested waters. These steps include: use of antifouling paints, cleaning your vessel with hot water, removal of all bait and emptying bait wells and bait buckets and flushing them with water containing chlorine bleach.
* Operate at slow speeds in manatee areas to lower the likelihood of harming this vulnerable mammal. In general, do not disturb wildlife.
DISCHARGE OF OIL
All vessels under 100 gross tons must have a fixed or portable means of discharging oily bilge slops into a container -- a bucket or bailer is acceptable. Any discharge that causes a sheen on the water is a violation of the Federal Water Pollution Control Act. If your vessel is 26 feet or more in length you must post a placard stating the federal requirements. The placard must be at least 5 by 8 inches and made of a durable material. Post it in the machinery space or at the bilge and ballast pump control station. The placard must state:
These placards are commonly available at marine supply stores. You are encouraged (required, if you are the source) to report any pollution discharge to the nearest USCG office. Report its location, source, size, color, substance (if known), and the time you saw it. If you are uncertain what substance has been discharged, keep flames away from it and avoid physical contact and inhalation of vapors. The USCG oil spill and pollution telephone number is 1-800-424-8802.
It is illegal to dump plastics anywhere on the water. Plastics are lightweight, strong, and durable. On land, these may be very desirable qualities; but on the water these same characteristics are responsible for environmental damage. Because plastics are lightweight, they tend to float or remain in the water column. Birds, marine mammals, and fish can either ingest or become entangled in plastics. Both are major problems. Because plastics are strong, it may be difficult or impossible for marine animals to break free once they have become entangled. And, because plastics are durable, the threat to marine animals is persistent.
It is illegal to dump garbage in any U.S. lakes, rivers, bays, harbors, and so on. Limited dumping offshore of trash and garbage is permitted beyond the 3-mile limit. If you have a vessel 26 feet or more in length, you are required to have a placard summarizing dumping restrictions. This placard notifies guests and crew of applicable discharge restrictions. It is available in most marine stores.
Regional, state, or local regulations may impose additional restrictions.
1. Match the following parts of the boat with the numbers on the illustrations.
B. On Deck and Below
2. In what direction can a boat not sail?
a) with the wind blowing across the boat (abeam)
b) into the wind
c) with (in the same direction as) the wind
3. from the illustrations, identify:
4. Two major types of boat hulls are __ hulls and __ hulls.
5. A sailboat with an operating engine is considered a __ under the navigation rules even if the sail is raised.
6. True or false: A backfire-flame arrester is required on a diesel engine.
7. True or false: Any discharge that causes a sheen on the water is a violation of the Federal Water Pollution Control Act.
8. A boat with a length of 16 feet and a width of 5 feet can carry a maximum of __ 150 pound passengers on a calm day.
Answers in Appendix A, p. 201.}
Copyright © 1984 by America Sailing Association
Copyright © 1987, 1998 by American Sailing Association and Gary Jobson
Written by America’s foremost instructional authority, the new edition of Sailing Fundamentals is the official learn-to-sail manual of the United States Coast Guard Auxiliary. Sailing Fundamentals is also used in the programs of yacht clubs, colleges, and sailing groups around the country. Unlike many sailing books, which can reflect the biases and idiosyncrasies of their authors, this book has been extensively pretested to ensure that it offers the fastest, easiest, most systematic way to learn basic sailing and coastal cruising.
Widely acclaimed author Gary Jobson has won several major races, including the 1977 America’s Cup victory as tactician aboard Courageous. He was head sailing coach at the US Naval Academy, and has conducted sailing clinics across the country.
- Touchstone |
- 224 pages |
- ISBN 9780743273084 |
- August 2005