Tennessee Boating Safety Education
Certificate Full Test
bow *** front of a boat
stern *** Rear of a vessel
starboard *** right side of a vessel
port *** Left side of a vessel
hull *** the frame or body of ship
gunwale *** the upper edge of the side of a boat or ship
cleat *** Metal fitting on which a rope can be fastened
propeller *** Rotates and powers a boat forward or backward
beam *** Maximum width of a vessel
freeboard *** Distance from water to lowest point of the boat where water could come on board
draft *** Depth of water needed to float a vessel
keel *** Main centerline (backbone) of a vessel or the extension of hull that increases stability in the
water
,Displacement Hull *** Boats with these move through the water by pushing the water aside and are
designed to cut through the water with very little propulsion.
If you lower a boat into the water, some of the water moves out of the way to adjust for the boat. If you
could weigh that displaced water, you would find it equals the weight of the boat. That weight is the
boat's displacement.
Boats with these are limited to slower speeds.
A round-bottomed hull shape acts like this. Most large cruisers and most sailboats have these, allowing
them to travel more smoothly through the water.
Planing Hulls *** Boats are designed to rise up and glide on top of the water when enough power is
supplied. These boats may operate like displacement hulls when at rest or at slow speeds but climb
toward the surface of the water as they move faster.
Boats can skim along at high speed, riding almost on top of the water rather than pushing it aside.
Flat-bottomed and vee-bottomed hull shapes. Most small power-driven vessels, including personal
watercraft (PWC), and some small sailboats have planing hulls, allowing them to travel more rapidly
across the water.
personal watercraft *** A small vessel that uses an inboard jet drive as its primary source of propulsion,
and is designed to be operated by a person or persons sitting, standing, or kneeling on the vessel rather
than inside the vessel
Planing Hull Speeds *** Displacement Mode: A planing hull, when operated at very slow speeds, will cut
through the water like a displacement hull.
Plowing Mode: As speed increases, a planing hull will have a raised bow, reducing the operator's vision
and throwing a very large wake. Avoid maintaining a speed that puts your boat in plowing mode.
,Planing Mode: Your boat is in planing mode when enough power is applied so that the hull glides on top
of the water. Different boats reach planing mode at different speeds
Flat Bottom Hull *** Advantages: This planing hull has a shallow draft, which is good for fishing in small
lakes and rivers.
Disadvantages: Rides roughly in choppy waters.
Deep Vee Hull *** Advantages: This planing hull gives a smoother ride than a flat bottom hull in rough
water.
Disadvantages: Takes more power to move at the same speed as flat bottom hulls. May roll or bank in
sharp turns.
Round Bottom Hull *** Advantages: This typical displacement hull moves easily through the water even
at slow speeds.
Disadvantages: Has a tendency to roll unless it has a deep keel or stabilizers.
Multi Hull *** Advantage: Another example of a displacement hull, the multi-hull has greater stability
because of its wide beam.
Disadvantage: Needs a large area when turning.
Vessel Length *** dictates the equipment the vessel must have to comply with federal and state laws.
Length overall is measured from the tip of the bow in a straight line to the stern of the vessel. Bowsprits;
rudders; outboard motors and motor brackets; handles; and other fittings, attachments, and extensions
are not included in the measurement.
Length Classes *** Class A Less than 16 feet
Class 1 16 feet to less than 26 feet
Class 2 26 feet to less than 40 feet
Class 3 40 feet to less than 65 feet
, Outboard Engines *** have more power per pound of weight than do inboard engines.
a portable, self-contained package of an engine, gear case, and propeller that is attached to the
transom of a boat.
A growing number are of four-stroke design, but many are still conventional two-stroke engines that
burn oil as a lubricant along with the fuel. New-technology two-stroke outboards are direct-injection
engines and burn over 75% cleaner than conventional two-stroke outboards.
Steering controlled by a tiller or steering wheel that swivels the entire engine to direct propeller thrust.
tiller *** Lever used to turn a rudder to steer a boat
transom *** Vertical surface at the back of the hull
Inboard Engines *** A four-stroke automotive engine adapted for marine use. Inboard engines are
mounted inside the hull's midsection or in front of the transom.
The engine turns a drive shaft that runs through the bottom of the hull and is attached to a propeller at
the other end.
Many PWC have two-stroke _____ engines that burn oil as a lubricant along with the fuel. New-
technology two-stroke PWC engines are direct-injection engines and burn cleaner than conventional
PWC engines.
Steering of most vessels, except PWC and jet-drive boats, is controlled by a rudder behind the propeller.
stern Drives *** are known also as inboard/outboards (I/Os) because they combine features found on
both inboard and outboard engines. are four-stroke automotive engines adapted for marine use and are
mounted inside the boat. this engine is attached through the transom to a drive unit (also called an
"outdrive") that is essentially the lower unit of an outboard. The engine turns a drive shaft that is
attached to a propeller at the other end.
Steering of the boats is controlled by the outdrive, which swivels like an outboard engine to direct
propeller thrust.
Certificate Full Test
bow *** front of a boat
stern *** Rear of a vessel
starboard *** right side of a vessel
port *** Left side of a vessel
hull *** the frame or body of ship
gunwale *** the upper edge of the side of a boat or ship
cleat *** Metal fitting on which a rope can be fastened
propeller *** Rotates and powers a boat forward or backward
beam *** Maximum width of a vessel
freeboard *** Distance from water to lowest point of the boat where water could come on board
draft *** Depth of water needed to float a vessel
keel *** Main centerline (backbone) of a vessel or the extension of hull that increases stability in the
water
,Displacement Hull *** Boats with these move through the water by pushing the water aside and are
designed to cut through the water with very little propulsion.
If you lower a boat into the water, some of the water moves out of the way to adjust for the boat. If you
could weigh that displaced water, you would find it equals the weight of the boat. That weight is the
boat's displacement.
Boats with these are limited to slower speeds.
A round-bottomed hull shape acts like this. Most large cruisers and most sailboats have these, allowing
them to travel more smoothly through the water.
Planing Hulls *** Boats are designed to rise up and glide on top of the water when enough power is
supplied. These boats may operate like displacement hulls when at rest or at slow speeds but climb
toward the surface of the water as they move faster.
Boats can skim along at high speed, riding almost on top of the water rather than pushing it aside.
Flat-bottomed and vee-bottomed hull shapes. Most small power-driven vessels, including personal
watercraft (PWC), and some small sailboats have planing hulls, allowing them to travel more rapidly
across the water.
personal watercraft *** A small vessel that uses an inboard jet drive as its primary source of propulsion,
and is designed to be operated by a person or persons sitting, standing, or kneeling on the vessel rather
than inside the vessel
Planing Hull Speeds *** Displacement Mode: A planing hull, when operated at very slow speeds, will cut
through the water like a displacement hull.
Plowing Mode: As speed increases, a planing hull will have a raised bow, reducing the operator's vision
and throwing a very large wake. Avoid maintaining a speed that puts your boat in plowing mode.
,Planing Mode: Your boat is in planing mode when enough power is applied so that the hull glides on top
of the water. Different boats reach planing mode at different speeds
Flat Bottom Hull *** Advantages: This planing hull has a shallow draft, which is good for fishing in small
lakes and rivers.
Disadvantages: Rides roughly in choppy waters.
Deep Vee Hull *** Advantages: This planing hull gives a smoother ride than a flat bottom hull in rough
water.
Disadvantages: Takes more power to move at the same speed as flat bottom hulls. May roll or bank in
sharp turns.
Round Bottom Hull *** Advantages: This typical displacement hull moves easily through the water even
at slow speeds.
Disadvantages: Has a tendency to roll unless it has a deep keel or stabilizers.
Multi Hull *** Advantage: Another example of a displacement hull, the multi-hull has greater stability
because of its wide beam.
Disadvantage: Needs a large area when turning.
Vessel Length *** dictates the equipment the vessel must have to comply with federal and state laws.
Length overall is measured from the tip of the bow in a straight line to the stern of the vessel. Bowsprits;
rudders; outboard motors and motor brackets; handles; and other fittings, attachments, and extensions
are not included in the measurement.
Length Classes *** Class A Less than 16 feet
Class 1 16 feet to less than 26 feet
Class 2 26 feet to less than 40 feet
Class 3 40 feet to less than 65 feet
, Outboard Engines *** have more power per pound of weight than do inboard engines.
a portable, self-contained package of an engine, gear case, and propeller that is attached to the
transom of a boat.
A growing number are of four-stroke design, but many are still conventional two-stroke engines that
burn oil as a lubricant along with the fuel. New-technology two-stroke outboards are direct-injection
engines and burn over 75% cleaner than conventional two-stroke outboards.
Steering controlled by a tiller or steering wheel that swivels the entire engine to direct propeller thrust.
tiller *** Lever used to turn a rudder to steer a boat
transom *** Vertical surface at the back of the hull
Inboard Engines *** A four-stroke automotive engine adapted for marine use. Inboard engines are
mounted inside the hull's midsection or in front of the transom.
The engine turns a drive shaft that runs through the bottom of the hull and is attached to a propeller at
the other end.
Many PWC have two-stroke _____ engines that burn oil as a lubricant along with the fuel. New-
technology two-stroke PWC engines are direct-injection engines and burn cleaner than conventional
PWC engines.
Steering of most vessels, except PWC and jet-drive boats, is controlled by a rudder behind the propeller.
stern Drives *** are known also as inboard/outboards (I/Os) because they combine features found on
both inboard and outboard engines. are four-stroke automotive engines adapted for marine use and are
mounted inside the boat. this engine is attached through the transom to a drive unit (also called an
"outdrive") that is essentially the lower unit of an outboard. The engine turns a drive shaft that is
attached to a propeller at the other end.
Steering of the boats is controlled by the outdrive, which swivels like an outboard engine to direct
propeller thrust.
