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ASA 104 > Vocabulary > Flashcards

Vocabulary Flashcards

Vocabulary not covered in ASA 101 or 103

1
Q

A measure of electricity consumption and battery capacity: one amp of current for one hour

A

Amp-hour

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2
Q

A device that steers a boat automatically

A

Autopilot

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3
Q

A charter of a boat that’s “bare” of crew and provisions

A

Bareboat charter

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4
Q

The direction in degrees toward one object from another

A

Bearing

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5
Q

A removable sunshade over a boat’s cockpit

A

Bimini

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6
Q

The deck connecting the hulls of a catamaran

A

Bridgedeck

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7
Q

The distance from the underside of the bridgedeck to the water’s surface

A

Bridgedeck clearance

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8
Q

A line fixed at both ends that spreads the force on another line, a towline, e.g., attached at its midpoint

A

Bridle

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9
Q

The surface that’s walked on inside a boat

A

Cabin sole

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10
Q

The surface that’s walked on in a boat’s cockpit

A

Cockpit sole

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11
Q

A pair of numbers, one latitude the other longitude, that describe a position on the Earth’s surface

A

Coordinates

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12
Q

The apparent tendency, due to the Earth’s rotation, of an object or fluid in motion to follow a curved path

A

Coriolis effect

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13
Q

A beam that connects the hulls of a catamaran

A

Crossbeam

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14
Q

A small crane mounted on deck (usually as a pair) used to hoist and secure a dinghy out of the water

A

Davit

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15
Q

A system of plotting a boat’s progress using heading, speed, and elapsed time only

A

Dead reckoning (DR)

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16
Q

A structure built on top of a deck to house accommodations

A

Deckhouse

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17
Q

The curvature of a sail from luff to leech

A

Depth

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18
Q

A folding spray hood usually made of canvas with clear plastic windows

A

Dodger

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19
Q

A braced strut beneath a crossbeam on a catamaran that supports the mast

A

Dolphin striker

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20
Q

The depth of a boat below the water

A

Draft

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21
Q

The curvature of a sail

A

Draft

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22
Q

The fore-and-aft position where a sail’s depth is greatest

A

Draft position

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23
Q

A shaft seal that admits no water into the boat

A

Drip less seal

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24
Q

The engine, propeller, and the associated components that “drive” a boat mechanically

A

Drive train

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25
A position for a boat established with two or more lines of position
Fix
26
A group of vessels sailing in company
Flotilla
27
Bear away from close-hauled to gain speed
Foot off
28
A sailboat rig where the headstay is attached at some distance below the masthead
Fractional rig
29
Pivot mounts that allow a surface (such as a table or stove top) to remain level when a boat heels
Gimbals
30
The compass course the helmsman steers
Heading
31
An electrical device that converts direct current to alternating current
Inverter
32
A system of lines run from mast to boom to hold a dropped sail above the boom
Lazy-jacks
33
a line with a weight on the end used for taking soundings
Lead line
34
A line, established by a bearing or range, along which a boat's position lies
Line of position (LOP)
35
The top of a mast
Masthead
36
a wind vane fitted at the masthead
Masthead fly
37
A navigation light that shines on both sides of the boat in an arc from the bow to 22.5 degrees abaft the beam; used on a sailing vessel that is under power
Masthead Light (also called a steaming light)
38
A sailboat rig where the headstay is attached at the masthead
Masthead rig
39
A broken end of wire in a wire rope or cable
Meathook
40
To moor a boat by means of an anchor in the harbor and the stern tied to a quay or pier
Mediterranean moor
41
Motoring while also using the sails for propulsion
Motorsailing
42
A forward projection of a bridgedeck
Nacelle
43
A distance equal to one minute of latitude (6,076 feet)
Nautical mile
44
A line tied to the bow of a dinghy used to moor it or (sometimes) tow it
Painter
45
A gangway used between the stern of a vessel and a quay or pier
Passerelle
46
A line from the end of the boom to the bow that prevents the boom from crossing the boat in an accidental jibe
Preventer
47
A boat with two hulls of unequal size
Proa
48
The shaft on which a propeller is fitted
Propeller shaft
49
A strut that supports a propeller shaft below a boat's hull
Propeller strut
50
The difference in height between high and low tide
Range
51
The shaft that forms the backbone of a rudder
Rudder stock
52
The components of the drive train after the shaft coupling
Running gear
53
A fabric cover for a sail
Sailcover
54
The arrangement of sails on a sailboat's rig
Sail plan
55
A braced strut above the forward crossbeam on a catamaran
Seagull striker
56
The connector between the transmission and the propeller shaft
Shaft coupling
57
A waterproofing seal around the propeller shaft
Shaft seal
58
water depths printed on a nautical chart
Soundings
59
A sail set on a stay other than the headstay
Staysail
60
A lever in the shape of a quarter circle attached to the rudder stock by which the steering cables turn the rudder
Steering quadrant
61
the very bow of a boat where the hull sides meet
Stem
62
The tube through which a propeller shaft passes from inside to outside a boat
Stern tube
63
A type of shaft seal
Stuffing box
64
Weather data covering a wide area
Synoptic scale
65
A publication that presents prediction data for tides in tabular form
Tide table
66
The path a boat has followed across the Earth's surface
Track
67
A taut net strung between the hulls of a multihull
Trampoline
68
A device that transmits energy (ref. depth transducer, speed transducer)
Transducer
69
A gearbox that transmits engine revolutions, usually reduced, to a propeller
Transmission
70
A loop of plumbing raised above a boat's waterline with a vent to prevent back-siphoning
Vented loop
71
A location chosen on a nautical chart, as a destination or a place to change course, e.g.
Waypoint

ASA 104 (4 decks)

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