District Of Columbia Safe Boating Course

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Index

CHAPTER 1: The Boat

1.1 BOAT TERMINOLOGY

Specific terms are used to describe the various parts of a boat. Each end and side of the boat, its length and width, and its accessories have specific terms. Every boater should be familiar with the following terms before operating a boat.

1.2 BOAT LENGTHS

Boats are identified in classes by length. Federal and state laws require certain equipment aboard boats, depending on the class or length of the boat.

A boat's length is measured along its centerline from the outside of the bow to the outside of the stern. This measurement does not include any attachments, such as swim platforms or wakeboard towers or outboard engines.

Class A: Less than 16 ft.

Class 1: Between 16 and 26 ft.

Class 2: Between 26 and 40 ft.

Class 3: Between 40 and 65 ft.

1.3 BOAT HULL DESIGNS AND USES

Boat bottoms or "hulls" come in a variety of shapes and sizes. Each hull type is designed to either displace or plane through the water. Sailboats and large cruise ships use displacement hulls because the combination of their size (weight) and power they will not allow them to plane. On the other hand, smaller powerboats are typically built with planing hulls that are designed to rise up and ride on top of the water at higher speeds than displacement hull boats.

1.3.1 HULL TYPES

FLAT BOTTOM

Flat bottom boats are great for fishing. They are generally designed for slow speeds and calm water.

ROUND BOTTOM

Round bottom boats, such as canoes, move smoothly through the water with little effort. Boaters must be cautious when loading, entering and exiting a round bottom boat. Due to the hull design, these boats roll very easily.

DEEP-V HULL

The Deep-V hull is the most common hull type for powerboats. These boats move through rough water at higher speeds and give a smoother ride than flat bottom or round bottom boats. They also require larger engines than flat bottom or round bottom boats.

MULTI-HULL

Multi-hull boats are the most stable of the hull types. These boats require plenty of room to steer and turn. Catamarans and pontoon boats use the multi-hull design.

1.3.2 ENGINE TYPES

OUTBOARD

Outboard engines are mounted on the transom of the boat. The steering of outboards can be controlled by a hand tiller or a steering wheel, which moves the entire engine when steering is adjusted.

In the past outboards were typically two-stroke engines, but manufacturers have since switched to four-stroke engines. Two-stroke engines require oil to be mixed with gasoline to lubricate the engine and four-stroke engines require the oil and gasoline to be separate. Four-stroke engines, in addition to running quieter and smoother, are more environmentally friendly as the exhaust they emit is virtually smokeless compared to two-strokes.

Inboard

Inboard engines are typically four-stroke automotive engines that are modified for use on the water. An inboard engine is mounted inside the hull of the boat and powers the driveshaft, through the boat bottom, which is connected to a propeller. Steering is controlled by a rudder, positioned either directly behind or to the side of the propeller.

Stern Drives

Sterndrives are sometimes called inboard/outboards (I/O) because they have features found on both inboard and outboard engines. Similar to inboards, sterndrives use four-stroke automotive engines that are modified for use on the water. Sterndrive engines are mounted inside the boat through the transom, and power the drive train, which is connected to the propeller. Similar to outboards, the sterndrive moves when the steering wheel is adjusted.

1.4 BOAT CAPACITIES

Be aware of the small-vessel regulations pertaining to engine power and load capacity. Federal law mandates that boats of less than 20 feet in length must have a capacity plate in the steering or helm area. As a boat owner or operator, you should know the recommended gross load capacity that can be safely carried in the hull concerned:

It includes the total weight of persons, equipment, stores, fuel, engine assembly and steering controls.
It is indicated with the "equivalent number of adult persons."
It is indicated on a capacity plate, which, when fitted, is permanently attached to the pleasure craft.

THE CAPACITY PLATE ALSO INDICATES THE "RECOMMENDED SAFE LIMITS OF ENGINE POWER" FOR THE HULL CONCERNED. IT MAY NEVER BE EXCEEDED. THIS CALCULATION IS BASED ON THE RECOMMENDED GROSS LOAD CAPACITY FOR OUTBOARD POWERED BOATS ONLY.

1.4.1 OVERLOADING OR OVER-POWERING

An overloaded boat or over-powered boat can be extremely dangerous. An over-powered boat may cause the stern to sit lower in the water, making the vessel susceptible to being swamped by its own wake or that of a passing boat. Similarly, too much weight in the stern or the bow will make the vessel prone to swamping. Additionally, it is important to spread the load evenly throughout the vessel. Too much weight on either side will make the vessel less stable and more apt to capsize. Take extreme caution in loading your vessel properly.

BEWARE OF BAD WEATHER! TAKE MUCH LIGHTER LOADS IN POOR WEATHER CONDITIONS TO ENSURE BOAT STABILITY.

1.4.2 SAFE LOADING GUIDELINES (FOR SMALL BOATS)

To determine the maximum horsepower capacity for small, flat-bottomed boats, multiply the boat length (ft.) by the transom width (ft.) and compare the resulting value to the following chart:

EXAMPLE
BOAT LENGTH = 12 FT.
BOAT WIDTH = 4FT.
12 FT. X 4 FT. = 48
MAX HP OF 15

LENGTH X WIDTH =	MAX HP
35 FT OR LESS	3
36 - 39 FT	5.5
40 - 42 FT	7.5
43 - 45 FT	10
46 - 52 FT	15

1.4.3 PERSON CAPACITY

Manufacturers take a number of variables into account when determining the maximum person capacity for a boat (which is displayed on the capacity plate). The maximum person capacity is a guideline. Keep in mind that most manufacturers assume an average weight per person of 150 lb. If you have passengers over 150 lb., you should adjust the maximum person capacity accordingly.

1.5 HULL IDENTIFICATION NUMBER (HIN)

All pleasure craft manufactured since 1972 are permanently marked with a Hull Identification Number (HIN), which is the 12-character serial number of your vessel. To identify your vessel, HINs are marked at the stern on the starboard (right) side, or as close to that area as possible. You must NOT deface or alter the HIN.

THE HIN INDICATES THE BOAT'S

Manufacturer
Serial number
Month and year of production

1.6 BOAT REGISTRATION REQUIREMENTS

1.6.1 BOAT REGISTRATION AND NUMBERING

All powered boats must be registered. Some other boats must be registered as well.

FEDERALLY DOCUMENTED VESSELS

Large recreational boats can be federally registered with the U.S. Coast Guard.

RECIPROCITY REGULATIONS

All states allow boats registered in another state to operate on state waters for a period of time. Eventually, owners must transfer boat registration to the state of principal use.

1.6.2 DISTRICT OF COLUMBIA REGISTRATION REQUIREMENTS

District of Columbia Harbor Patrol, Metropolitan Police Department:

The Harbor Patrol, Metropolitan Police Department is responsible for regulating the state boating laws in the District of Columbia.

1.6.2.1 REGISTRATION/TITLING

All vessels principally used on District of Columbia waters must be registered with the District of Columbia Harbor Master, MPD. This includes canoes, kayaks, inflatables, personal watercraft, sail, powered, USCG documented, recreational and commercial boats. Boat owners may operate a vessel up to 30 days with a current out of state registration or notarized bill of sale aboard. Proof of ownership must be provided with the application, a title fee of $2.00, applicable tax and registration fees payable by check or money order only.

Registration is complete when the owner receives decals and a registration card. The original registration card must be onboard when ever the boat is in use. The registration and decals are only valid for the year issued and will expire December 31st every year.

1.6.2.2 CERTIFICATE OF OWNERSHIP

Boat owners must keep their Certificate of Ownership in a safe place.

NOTE On the reverse of the Certificate of Ownership there is an application for the transfer of ownership.

1.6.2.3 CERTIFICATE OF NUMBER

A Certificate of Number is assigned and a Title and registration issued. USCG vessels will not receive a title but will need a current Certificate of Documentation, DC registration card and decal. This Certificate of Number is invalid 50 days after the date the vessel is no longer principally used on District of Columbia waters. The owner must notify the Harbor Master within 5 days if there is a change in legal ownership of the vessel. The Harbor Master must be notified within 15 days of a change of address.

If you lose or destroy your certificate of title, registration card or decals you must apply for a duplicate and submit a processing fee.

1.6.2.4 REGISTRATION FEES

REGISTRATION ITEM	FEE
Vessels with propulsion machinery
Under 16'	$15
16' to less than 26'	$25
26' to less than 40'	$35
Over 40'	$60
Vessels without propulsion machinery	$10

Successful registration results in a Certificate of Title, assignment of boat numbers and a decal. Your registration MUST be kept on board the vessel at all times. (It is advisable to keep the registration in a dry-bag on board.) Boat numbers must:

be affixed on both sides of the bow
be block letters, three inches high and contrasting with the color of your boat
letters must be separated from the numbers by a space or a hyphen:

For example: DC-1234-A or DC 1234 A. This is a federal and state requirement.

Lack of the correct documentation can result in delays and fines.

Make sure all boats are properly marked and documented. It's important to keep your papers with the boat – be particularly aware when transferring ownership of your vessel. Never carry your title with you on the water; carrying a copy is a good idea.