🚤 Stuff Every Boater Should Know: Training Guide

Boat Words and Measurements

Facing the bow, or front, port is left and starboard is right. These names stay fixed even when you turn around. Port and left both have four letters, which makes the pair easy to remember.

Beam is the boat's maximum width. Freeboard is the height from the waterline up to where water could come aboard. The bilge is the lowest inside space, where water and fuel vapors collect.

A V-shaped hull slices through waves, so it handles heavy water better than a flat hull. Pontoons and flat bottoms are made for calmer water. Hull shape is one factor to weigh against the weather forecast.

Capacity and Weight

Federal rules require a capacity plate on monohull boats under 20 feet, except sailboats, canoes, kayaks, and inflatables. The plate lists maximum persons, total weight, and sometimes maximum horsepower.

If there is no plate, a rough rule is length times width divided by 15. An 18 foot boat that is 5 feet wide gives 90 divided by 15, or 6 people, in good weather. This rule does not include gear weight.

Keep gear low and centered, and tie it down. Going over the boat's maximum horsepower rating can cut stability, change handling, and add legal risk.

Moving Around the Boat

Keep your weight centered and low. Sudden moves can shift a small boat and cause a capsize or fall.

When moving aboard, use three points of contact. Two hands and one foot, or two feet and one hand, make a slip less likely to hurt you.

Balance your load side to side and bow to stern. Recheck seating and movement as water conditions change during the trip.

Use safe seats and load people and gear properly. The operator is ultimately responsible for the boat's safe operation, including noticing changing activity around the boat.

Line Handling and Storage

After using a line aboard, the operator is responsible for storing it properly.

Proper storage keeps the line controlled and ready for its next job. The operator should teach passengers how to handle and store lines too.

Warn Passengers Before Maneuvering

Before making a maneuver that may shift passengers, the operator should warn passengers first.

Passengers can brace or stay seated when they know what the boat will do. Communication helps prevent falls, ejection, and capsizing.

Federal Carriage Rules

A recreational boat must carry at least one wearable life jacket for each person on board. Each must be Coast Guard approved and the right size for its wearer.

Boats 16 feet or longer add a throwable flotation device. Canoes and kayaks are exempt from that throwable rule.

Under the federal rule, children under 13 must wear a life jacket while the boat is underway, unless they are below decks or in an enclosed cabin. If a state sets its own child life jacket age, that state rule applies on its waters.

Wearable life jackets must be readily accessible. The required throwable flotation device must be immediately available. Keeping it on deck within arm's reach is a good practice, not part of the rule.

Choosing and Fitting Life Jackets

A life jacket should fit snug, not tight. If you lift it by the shoulders and it rides up over the ears, it is too big for that wearer.

Do not buy a child a bigger life jacket to grow into. A too-big jacket can slip off or float up over the face. Check the user weight on the label.

New labels show performance levels. A higher number means more flotation, for offshore use where rescue takes longer. Lower numbers suit calm water near shore.

Some labels have icons with slashes. A slashed water skiing or PWC icon warns the jacket is not approved for that activity. A slashed curved arrow means it will not turn an unconscious wearer face up.

Care and Serviceability

Do not stow life jackets in plastic bags, locked compartments, or under other gear. You should be able to put one on fast in an emergency.

Air dry a wet life jacket in the open. Dryers, radiators, and direct heat can destroy its buoyancy.

A foam life jacket with hard, waterlogged, oil-soaked, or moldy padding is unserviceable and does not count toward the legal requirement.

Some inflatable life jackets say 'approved only when worn,' so stashed under a seat they do not count as your required wearable life jacket. Before using an inflatable, check that its gas cylinder is full and all status indicators are green.

Wearing a life jacket is the single most important thing a boater can do to prevent drowning. Coast Guard data show, where cause of death was known, 76 percent of boating deaths were drownings, and where life jacket use was known, 87 percent of drowning victims were not wearing one. Most drownings happen near shore in calm weather.

Fire Extinguishers

Required boat extinguishers are Class B, marine type. Class B fights flaming liquids like gasoline, oil, and grease, the main fire risk around engines and fuel.

A boat under 26 feet with no fixed engine room system needs one 5-B extinguisher. From 26 to under 40 feet it needs two 5-B extinguishers, and from 40 to 65 feet it needs three. One 20-B may replace two 5-B.

Non-rechargeable extinguishers expire 12 years after the date stamped on the bottom. Check the gauge and tamper seal before each trip.

A small open outboard boat under 26 feet with no space where fuel vapors can collect is exempt from carrying a fire extinguisher, though carrying one is smart.

Fueling and Ventilation

Before starting a gasoline inboard engine, run the bilge blower at least 4 minutes and check the bilge for vapors. Gasoline vapors are heavier than air and can explode.

Close all hatches and openings before fueling so vapors cannot drift inside. Afterward, open everything, run the blower at least 4 minutes, and sniff for gas.

Fill a portable fuel tank ashore, off the boat. Most boat fires and explosions happen during or shortly after fueling.

Ventilation exhaust ducts must start in the lower one-third of the engine compartment, where heavy fuel vapors settle.

Engine Cut-Off and Maintenance

Federal law requires operators of covered boats under 26 feet to wear the engine cut-off switch link when on plane or above displacement speed. It stops the engine if the operator is thrown out.

A three-blade propeller at 3,200 rpm can strike about 160 times in one second. Shut off the engine whenever people are near the propeller.

Carry a spare cut-off link or wireless key so a passenger can restart the engine if the operator falls out.

Preventive maintenance means regularly inspecting key components. Common powerboat failure points include through-hulls, motor, electrical, and fuel systems.

Test the engine cut-off device before a trip. A broken one may stop the engine from restarting.

Backfire Flame Control

A gasoline inboard engine installed after April 25, 1940 must have acceptable backfire flame control. Outboard engines are excepted.

The flame arrestor stops an engine backfire from igniting gasoline vapors. It works like a metal screen, so the flame cannot pass through the cool mesh.

Keep the flame arrestor clean and secured with a flame-tight seal.

Boat Numbers and Ownership

Registration numbers go on each side of the forward half of the boat. Use plain vertical block characters at least 3 inches tall.

A Hull Identification Number, or HIN, has 12 characters with no slashes, hyphens, or spaces. The first three identify the manufacturer and the last two show the model year.

Boats carry two identical HINs. The primary one is on the starboard side of the transom and a hidden duplicate is inside.

If you sell a boat, move, or the boat is stolen or destroyed, notify the agency that issued the number within 15 days.

Alcohol and Safe, Legal Operation

The federal blood alcohol level for a recreational boat operator is .08 percent. A state's own limit applies on its waters.

Alcohol impairs judgment, vision, balance, and coordination, all of which a boater needs. Sun, wind, noise, and motion can make impairment worse.

The operator must avoid careless or reckless operation and operate courteously. Each operator is responsible for damage caused by their boat's wake.

The operator's responsibility extends to everyone aboard and around the boat. Follow rules in controlled, danger, and exclusion areas.

Coast Guard data show 69 percent of deaths, where it was known, happened on boats whose operator had no safety instruction. Formal boating education helps.

Protecting Waterways

In a Naval Vessel Protection Zone, stay at least 100 yards away from a large U.S. naval vessel without permission, and slow to minimum speed within 500 yards.

Report suspicious water activity to America's Waterway Watch at 1-877-24WATCH, or call 911 if danger is immediate.

Stop aquatic invasive species by cleaning, draining, and drying your boat and gear between waterways.

It is illegal to throw plastic trash overboard anywhere. Boats 26 feet or longer must post a placard explaining garbage discharge rules.

Boats with installed toilets need a working marine sanitation device. A Type III is a holding tank that is pumped out on shore.

In a No Discharge Zone, secure a flow-through toilet system so it cannot discharge, for example by padlocking the valve or removing the handle.

If a boating injury needs treatment beyond first aid, or someone disappears, the federal report is due within 48 hours.

Before You Leave

Give a float plan to a trusted friend or family member on land, not a passenger. It tells rescuers where you are going and when to worry.

Use a pre-departure checklist to check the boat, engine, lights, equipment, and safety gear. A common forgotten item is the drain plug.

Give passengers a safety briefing before getting underway. Show where life jackets, fire extinguishers, and first aid kit are, and what to do if someone falls overboard.

Make a go or no-go call using weather, boat condition, skill, and your checklist. An approaching storm forecast is a strong reason to stay ashore.

Weather Signs and Warnings

A sudden drop in temperature can warn of an approaching storm. Heavy static on an AM radio can signal nearby thunderstorm activity.

A falling barometer means rain is approaching. Check an onboard barometer every two to three hours.

The National Weather Service issues a Small Craft Advisory for any boat the conditions could adversely affect, not just boats of a certain size.

A Special Marine Warning covers short, sudden threats like thunderstorm winds of 34 knots or more. It usually lasts up to about 2 hours.

Storms and Waves

In severe weather, head the bow into the waves at about a 45-degree angle. Slow down but keep enough power to maintain headway and steering. Turn on running lights so others can see you.

If the engine dies in rough water, trail a sea anchor or even a bucket from the bow to keep it pointed into the waves.

If you hear thunder from a small open boat, leave the water and get to safe shelter on land right away.

In a storm, passengers should wear life jackets and sit low on the floor near the centerline. Close hatches and secure loose gear.

Tides, Charts, and Trailering

Low tide reveals hidden hazards and high tide hides them. Check tide tables and charts before you go.

Before towing, match the tow vehicle to the load of the boat and trailer. Balance the weight on the trailer.

Learn both launching and retrieving procedures for a powerboat trailer. Prepare gear away from a busy ramp before backing down.

Use local charts or maps to find hazards like low-head dams, overhead cables, and sand bars.

Pack essential medicines for the full trip plus possible delays.

Close your float plan after arriving home safely so no one starts an unnecessary search.

Getting Weather Forecasts on the Water

The Coast Guard says never leave the dock without checking the local weather forecast. You can check it on TV, the internet, or another source before leaving.

On a boat, a VHF marine radio has dedicated weather channels. Use them to get forecasts and keep listening while you are out on the water.

If you have a barometer aboard, the Coast Guard says to check it every two to three hours.

Float Plan Itinerary: Arrival and Departure Times

A float plan itinerary tells others where and when you plan to travel. It should include planned arrival and departure times.

Arrival, departure, and check-in times help show when a trip has become overdue, so someone ashore can call for help.

The itinerary also lists your mode of travel and the reason and location for any planned stops.

Required Navigation Lights

Show navigation lights from sunset to sunrise and in restricted visibility like fog or heavy rain. Other lights must not confuse or obscure them.

Sidelights are green on starboard and red on port. On boats under 20 meters, the two sidelights may be combined in one centerline lantern.

A sailboat under sail alone shows sidelights and a sternlight, but no white masthead light. Under 20 meters it may combine those lights at the top of the mast.

A powerboat under 12 meters may show one all-round white light and sidelights instead of separate masthead and stern lights.

A boat under 50 meters anchored at night may show one all-round white light. In a special anchorage area, boats under 20 meters do not need an anchor light.

A rowboat with no navigation lights must at least have ready a white flashlight or lantern to prevent collision.

Reading Lights at Night

If you see only a white sternlight and no red or green, you are overtaking that boat. The overtaking boat must keep clear.

If you see red, green, and white lights together, that boat is heading straight toward you. Seeing only red means you are looking at its port side.

A sailboat using its engine for propulsion counts as a power-driven vessel. By day it shows a cone point down, though boats under 12 meters may skip it.

Sound Signals

A short blast lasts about 1 second. A prolonged blast lasts 4 to 6 seconds.

On inland waters, one short blast means I intend to leave you on my port side. Two short blasts mean I intend to leave you on my starboard side.

Three short blasts mean I am operating astern propulsion. Five or more short rapid blasts mean doubt about the other boat's intentions.

Nearing a blind bend, sound one prolonged blast. A power-driven vessel making way in fog sounds one prolonged blast at least every 2 minutes.

Boats under 12 meters do not need a regulation whistle and bell, but must have some other way to make an efficient sound signal.

Red and Green Channel Marks

In U.S. waters, red right returning means keep red markers on your right or starboard side when coming in from sea. Heading upstream counts as returning too.

Red markers are nun buoys, cone-shaped, or red pillar buoys with even numbers. Green markers are can buoys, cylindrical, with odd numbers.

Numbers increase as you head in from sea. Even and odd numbering stays the same in IALA Regions A and B, even though the colors swap sides.

Orange and White Regulatory Marks

A white marker with an orange open diamond means danger. Black lettering may tell what the danger is.

An orange diamond with a cross inside means boats are excluded from that area.

An orange circle means operating restrictions are in effect in the marked area.

An orange square gives directions or information. It informs rather than warns or restricts.

Other Special Buoys

Preferred channel marks have red and green horizontal bands. The color of the top band tells which channel is preferred.

Red and white vertical stripes mean safe water all around, such as a fairway or mid-channel mark.

An isolated danger mark is black with red bands and two black balls on top. It marks a danger you can pass on all sides, but do not get close.

Special marks are solid yellow. They show areas like anchorages, cable or pipeline areas, and military exercise zones.

Lookout and Safe Speed

Rule 5 requires a proper lookout at all times by sight, hearing, and all available means. Most boating accidents are caused by operator inattention.

Safe speed means slow enough to avoid collision and stop within a distance that fits visibility, traffic, wind, and water depth.

Risk of collision must be checked using all appropriate means. If there is doubt, treat the risk as existing.

Action to avoid collision must be positive and made in ample time. Course or speed changes must be large enough for the other boat to notice.

Meeting, Crossing, and Overtaking

When two powerboats meet head-on, each turns to starboard so they pass port side to port side. If unsure, assume it is head-on.

When two powerboats cross, the one with the other on its starboard side gives way. It should avoid crossing ahead of the other.

Any vessel overtaking another must keep out of the way, and that duty overrides other right-of-way rules. You are overtaking when you approach from more than 22.5 degrees abaft the beam.

A power-driven vessel underway gives way to a sailing vessel under sail in open water. But a sailboat under sail gives way to a vessel fishing with nets or trawls that limit its maneuvering.

Stand-On and Give-Way Duties

The give-way vessel must take early and substantial action to keep well clear. Small, last-second turns confuse the other boat.

The stand-on vessel normally keeps its course and speed. It may act on its own once it is clear the give-way boat is not acting.

When collision is so close that the give-way boat alone cannot avoid it, the stand-on vessel must take the action that best helps avoid collision.

Narrow Channels and Limited Visibility

In a narrow channel, keep as near to the starboard side as safe. Do not anchor in a narrow channel whenever you can.

A boat under 20 meters or a sailboat must not impede a big ship that can safely navigate only within the channel.

In fog, if you hear a fog signal apparently ahead of your beam, slow to the minimum speed that keeps you on course and navigate with extreme caution.

Special circumstances may require departing from a Navigation Rule, but only to avoid immediate danger.

Visual Distress Signals

If you use flares to meet the visual distress signal rule, carry three for day use and three for night use. Three hand-held red flares approved for day and night meet the whole requirement by themselves.

Flares expire 42 months after manufacture. Expired flares can ride along as extras, but they do not count.

The orange distress flag with a black square and ball is a day signal only. It must be at least 3 by 3 feet.

An electronic visual distress light is acceptable for night use only. It flashes the SOS pattern.

The federal visual distress signal rule applies on coastal waters, the Great Lakes, and territorial seas. Boats under 16 feet only need night signals, and only between sunset and sunrise.

Orange smoke is a Coast Guard-approved day distress signal. Do not show distress signals unless help is needed.

Marine Radio and Emergency Beacons

VHF channel 16 is the distress and calling channel. Channel 9 is a supplementary calling channel for recreational boaters.

A MAYDAY call starts with MAYDAY three times, then This is, then your boat's name three times. Then give position, problem, help needed, and number aboard.

PAN PAN is for a very urgent safety message that is less serious than MAYDAY. SECURITE warns of a navigation safety or weather message.

A 406 MHz EPIRB or PLB sends a distress signal to rescue satellites. U.S.-coded beacons must be registered with NOAA.

A VHF marine radio reaches every boat in range, while a cell phone reaches only one person. A cell phone is not a substitute for marine radio.

A DSC distress alert is sent by holding the red DSC distress button for 5 seconds. An MMSI is your nine-digit radio ID.

With no radio or flares, slowly raise and lower both outstretched arms. That is an official distress signal.

Helping, Fires, and Other Emergencies

Federal law requires you to help anyone in danger at sea when you can do so without serious danger to your own boat or crew. You are not required to tow another boat.

For a boat fire, use PASS: pull the pin, aim at the base, squeeze the handle, sweep at the base. Shut off the engine and fuel or electric systems.

Carbon monoxide can build up near the stern swim platform. Stay at least 20 feet from a boat running its engine or generator, and install a marine CO detector.

Early carbon monoxide poisoning is often mistaken for seasickness. CO is odorless and colorless.

Teak surfing near the swim platform puts you in exhaust and near the propeller. Avoid activities at the stern while engines are running.

If your powerboat runs aground, stop the engine and check for leaks and damage before trying to free it.

If someone falls overboard, assign a spotter to point at the person nonstop. Circle around going forward, keep the person in sight, and shut off the engine when close.

A white strobe flashing 50 to 70 times a minute signals distress but does not meet the carriage rule.

Heat Illness on the Water

On a hot day, a passenger who is dizzy, nauseated, and sweating heavily may be overheating. These are signs of overheating, which can lead to heat exhaustion and heatstroke.

The first action is to move the person to a cooler, shaded spot. Seek medical attention if needed, and bring plenty of water for everyone aboard.

NASBLA warns that fatigue from heat, boat motion, vibration, and noise can impair judgment and slow reaction time.

Prepare for Unintended Water Entry

Every boater should be prepared for unintended water entry, meaning accidentally ending up in the water without planning to swim.

Prepare before departure so the event is not your first time thinking about flotation and recovery. This preparation is part of preventing capsizes, falls, and ejection.

Cold Water Dangers and Survival

The national boating education standard treats water below 70 degrees F as cold water. Dress for the water, not the air.

The first danger after falling into cold water is cold shock, a sudden gasp and rapid breathing. Keep your head up and get breathing under control.

In the first minutes, float first. Lie back in your life jacket and move as little as possible until your breathing steadies.

The H.E.L.P. position means Heat Escape Lessening Posture. Pull your knees to your chest and hug your life jacket with crossed arms.

Several people in the water should huddle together with arms around each other. It shares heat and makes a bigger target for rescuers.

Hypothermia starts when core body temperature drops below 95 degrees F. In near-freezing water, cold shock and early weakness are the more immediate dangers.

Capsize, Overboard, and Recovery

If your boat capsizes in open water, stay with the boat. It is easier to see than a swimmer and often stays afloat.

If someone falls overboard, shout and assign a spotter to point nonstop. Toss a throwable flotation device and circle forward, not in reverse.

When pulling a long-immersed cold water victim into a small boat, have them lie down flat. Handle them gently and get medical help.

If a person pulled from cold water shows no signs of life after a long time under, start CPR right away and get them to a hospital.

Heavy clothing or waders do not make you sink instantly. Trapped air in your clothes helps you float.

Paddling and River Hazards

In a canoe, the most stable position is kneeling, because it lowers your center of gravity. Think of capsizing as a normal part of paddling.

If separated from a kayak in fast water, float on your back with feet downstream. Do not try to stand in fast water because feet can get trapped.

A low-head dam is especially dangerous because it is hard to see from a small boat upstream. It can trap and drown boaters.

PWCs, Towing Sports, and Other Activities

On many personal watercraft, releasing the throttle causes loss of steering because the jet drive needs thrust to turn. Some newer models have off-throttle steering, but do not count on it.

After falling off a personal watercraft, the stern is generally the easiest place to climb back on. Wearing the lanyard stops the engine and keeps the PWC nearby.

When towing a water skier or tuber, always have a way to watch the person being towed and a seat open for them. On a PWC, that means space for three: driver, observer, and rider.

The Florida divers-down flag is red with a white diagonal stripe. Other states have their own flag and distance rules.

Many hunting and fishing incidents start with standing up to cast or reaching out for a decoy. Wear a life jacket and keep weight balanced.

Match your anchor to the bottom conditions. Let out five to seven times the water depth in anchor line, and anchor from the bow, not the stern.

Before docking, have fenders and dock lines ready. In a confined area, assess wind, current, and seas, and move slowly.

At a busy boat ramp, prepare your boat and gear away from the ramp before launching.

Cold Water Timelines and the 1-10-1 Guide

Many boating courses teach a rough timeline called 1-10-1. It means about 1 minute of cold shock, about 10 minutes of useful muscle movement, and about 1 hour to unconsciousness.

The National Center for Cold Water Safety calls 1-10-1 a myth because strength fades steadily and can go much faster in icy water. Treat the numbers only as a rough reminder, not a guarantee.

Paddlecraft Risks

In 2024, where boat type was known, about 26 percent of US boating deaths involved kayaks, canoes, or paddleboards. Kayaks alone were 16 percent of deaths.

Paddlecraft are small and tippy, so a paddler can end up in the water in an instant. Wearing a life jacket matters because a capsize may not give time to grab one.

Many states do not register paddlecraft. NASBLA suggests writing your name and phone number inside yours so rescuers can reach you if it is found adrift.