International Crew Course Flashcards
Name 8 types of vessels or boats.
- Cabin Cruiser
- Sailboat
- Row boat
- Fishing Trawler
- Speedboat
- Sportfish boat
- Superyacht Cruise ship
- Oil Tanker
- Container ship
Name 4 types of sailing vessels.
- Sailing Dingy
- Sloop
- Bermuda-Rigged Ketch
- Schooner
What is a Sloop?
A sail boat with a single mast and a fore-and aft rig (sails)
What is a Bermuda Rigged Ketch?
A Sailing craft with 2 masts.
What is a Schooner?
A schooner is a type of sailing vessel with fore-and-aft sails on two or more masts, the foremast being no taller than the rear mast(s).
What is a Fin Keel (Sailboat)?
A fin keel is a projection from the bottom (hull) of a vessel to give it additional stability and is generally made of lead.
What is a Wing Keel (Sailboat)?
Winged keels are generally found on sailboats that sail in shallow waters. They are only of benefit for yachts sailing upwind where stability and the ability to produce side force are important and where the depth of the water is limited.
Length Overall (LOA)
The overall fore and aft length of the hull.
Freeboard
The height of the side of a vessel above the water.
Stern
Back of the boat
Bow
Front of the boat
Draft
Is the vertical distance between the waterline and the bottom of the hull (Keel). Draft determines the minimum depth of water a boat can safely navigate.
Port
Left hand side of a vessel facing forward.
Starboard
Right hand side of a vessel facing forward.
Keel
A weighted projecting fin fixed on the centerline of a vessel which provides stability and reduces sideways drift.
Operate
To control the speed and course of the boat.
Cleats
A device for securing a line to a deck or dock. The line secures the boat against a dock.
Bulkheads
An upright wall within the hull of a ship. Bulkheads serve several purposes:
- increase the structural rigidity of the vessel
- divide functional areas into rooms
- create watertight compartments that can contain water incase of a hull breach or leak
Windward
The side of the vessel from which the wind blows is known as “windward”
Leeward
The side of the vessel away from which the wind is blowing.
Radar Reflector
A device fitted to boats to ensure they are seen on radar screens.
Boats made of fibreglass or wood do not reflect the radar pulse very well which can result in collisions during limited visibility.
Fairleads
A fairlead is a device to guide a line, rope or cable around an object, out of the way or to stop it from moving laterally. Typically a fairlead will be a ring or hook.
Springline
One line leads from the bow of the vessel aft of midships to the dock and one from the stern of the vessel lead forward of midships to the dock. These stop the boat moving fore and aft and should be taut.
Pulpit
Metal frame around the bow.
Sternrail
Metal railing on the back of a boat.
Foredeck
The deck area in front of a mast on a sailboat or in front of the cockpit on a motorboat.
Grabrails
Rails attached either to the coach roof or inside the cabins for holding on to while at sea.
Washboards
These are boards used to seal off the companionway to prevent the entry of water in heavy weather.
Winch
A deck mounted drum with a handle offering mechanical advantage when used to trim sheets. Winches may also be mounted on the mast to assist with raising sails.
Tiller
Used to steer small boats. It is attached to the rudder.
Thru Hull Fitting
Designed to allow water to pass through them from inside a boat, such as the sinks, toilets and for engine water cooling.
Kill Cord
An engine cut out device, one end of which is attached to a switch near the throttle and the other to the driver’s wrist. In the event of the helmsman falling overboard this device will stop the engine.
Relative Direction
When on board a vessel, there are correct ways of describing the location of surrounding objects. These are known as “relative bearings” and are based on the direction of the object in relation to the vessel.
- “Dead Ahead” an object directly infront of the boat
- “Dead Astern” an object directly behind the boat
- “Abeam” any object 90 degrees to the vessel
Barometer
An instrument that indicates atmospheric pressure.
A single reading of barometric pressure gives no important information, it is the rate of change of pressure that is important in itself and this can only be gained from a series of readings.
Companionway
Is a stairwell giving access from the deck to the cabin.
Name 4 different types of hulls.
- Catamaran (Multihull)
- Deep V Hull
- Flat Bottom Hull
- Round Bottom Hull
What is a forestay?
On a sailing vessel, a forestay, sometimes called a stay, is a piece of standing rigging which keeps a mast from falling backwards. It is attached either at the very top of the mast, or in fractional rigs between 1/8 and 1/4 from the top of the mast. The other end of the forestay is attached to the bow.
What is the function of a rudder?
The primary control surface to steer a ship.
What is a fractional rig?
A fractional rig on a sailing vessel consists of a foresail, such as a jib or genoa sail where the forestay does not reach all the way to the top of the mast.
What is a masthead rig?
A masthead rig on a sailing vessel consists of a forestay and backstay both attached to the top of the mast.
What is a backstay?
Backstays support the mast on cruising yachts. A backstay runs from each lateral corner of the stern to the top of the mast.
What is a displacement hull?
Displacement hulls are designed to power through the water. They are mostly found on sailing boats and trawler type boats. The advantages of a displacement hull are lower power requirements than a planning hull, allowing a longer cruising range and increased load carrying ability.
What is a planing hull?
Planing hulls are designed to glide on the water’s surface as the boat’s speed increases. The advantages of the planing hull are shorter journey times but the disadvantage is the power needed to get a boat onto the “plane” and the amount of fuel required to do so.
Catamaran Hull (Multihull)?
Catamarans, trimarans, pontooon boats and some house boats use a multi-hull design. The wide stance provides greater stability. A catamaran needs a wide turning circle due to its wide beam. They can be power or sail boats.
Deep V Hull?
The V bottom tends to have a sharper entry into the water which provides for a smoother ride in rough water. They are slower than planing hulls as they travel through the water rather than above it.
Many runabouts use the V bottom design, they do however roll and bank in sharp turns and seas.
Flat Bottom Hull
These boats are generally less expensive to build and have a shallow draft. They can get up on plan easily but unless the water is very calm they tend to give a rough ride because of the flat bottom poundingon eacy wave.
They also tend to be less stable and require careful balancing of cargo and crew.
Round Bottom Hull
These move easily through the water, especially at slow speeds. They do however tend to roll unless outfitted with a deep keel or “stabilizers”.
What is the difference between a lifejacket and PFD?
Only a lifejacket will turn an unconscious person face up in the water. Personal flotation devices (PFDs) and buoyancy aids will not.
What is the highest safety priority in preventing boating deaths?
Wearing a lifejacket at all times when boating is the highest safety priority in preventing boating deaths.