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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
Q

A position for a boat established with two or more lines of position

A

Fix

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26
Q

A group of vessels sailing in company

A

Flotilla

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27
Q

Bear away from close-hauled to gain speed

A

Foot off

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28
Q

A sailboat rig where the headstay is attached at some distance below the masthead

A

Fractional rig

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29
Q

Pivot mounts that allow a surface (such as a table or stove top) to remain level when a boat heels

A

Gimbals

30
Q

The compass course the helmsman steers

A

Heading

31
Q

An electrical device that converts direct current to alternating current

A

Inverter

32
Q

A system of lines run from mast to boom to hold a dropped sail above the boom

A

Lazy-jacks

33
Q

a line with a weight on the end used for taking soundings

A

Lead line

34
Q

A line, established by a bearing or range, along which a boat’s position lies

A

Line of position (LOP)

35
Q

The top of a mast

A

Masthead

36
Q

a wind vane fitted at the masthead

A

Masthead fly

37
Q

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

A

Masthead Light (also called a steaming light)

38
Q

A sailboat rig where the headstay is attached at the masthead

A

Masthead rig

39
Q

A broken end of wire in a wire rope or cable

A

Meathook

40
Q

To moor a boat by means of an anchor in the harbor and the stern tied to a quay or pier

A

Mediterranean moor

41
Q

Motoring while also using the sails for propulsion

A

Motorsailing

42
Q

A forward projection of a bridgedeck

A

Nacelle

43
Q

A distance equal to one minute of latitude (6,076 feet)

A

Nautical mile

44
Q

A line tied to the bow of a dinghy used to moor it or (sometimes) tow it

A

Painter

45
Q

A gangway used between the stern of a vessel and a quay or pier

A

Passerelle

46
Q

A line from the end of the boom to the bow that prevents the boom from crossing the boat in an accidental jibe

A

Preventer

47
Q

A boat with two hulls of unequal size

A

Proa

48
Q

The shaft on which a propeller is fitted

A

Propeller shaft

49
Q

A strut that supports a propeller shaft below a boat’s hull

A

Propeller strut

50
Q

The difference in height between high and low tide

A

Range

51
Q

The shaft that forms the backbone of a rudder

A

Rudder stock

52
Q

The components of the drive train after the shaft coupling

A

Running gear

53
Q

A fabric cover for a sail

A

Sailcover

54
Q

The arrangement of sails on a sailboat’s rig

A

Sail plan

55
Q

A braced strut above the forward crossbeam on a catamaran

A

Seagull striker

56
Q

The connector between the transmission and the propeller shaft

A

Shaft coupling

57
Q

A waterproofing seal around the propeller shaft

A

Shaft seal

58
Q

water depths printed on a nautical chart

A

Soundings

59
Q

A sail set on a stay other than the headstay

A

Staysail

60
Q

A lever in the shape of a quarter circle attached to the rudder stock by which the steering cables turn the rudder

A

Steering quadrant

61
Q

the very bow of a boat where the hull sides meet

A

Stem

62
Q

The tube through which a propeller shaft passes from inside to outside a boat

A

Stern tube

63
Q

A type of shaft seal

A

Stuffing box

64
Q

Weather data covering a wide area

A

Synoptic scale

65
Q

A publication that presents prediction data for tides in tabular form

A

Tide table

66
Q

The path a boat has followed across the Earth’s surface

A

Track

67
Q

A taut net strung between the hulls of a multihull

A

Trampoline

68
Q

A device that transmits energy (ref. depth transducer, speed transducer)

A

Transducer

69
Q

A gearbox that transmits engine revolutions, usually reduced, to a propeller

A

Transmission

70
Q

A loop of plumbing raised above a boat’s waterline with a vent to prevent back-siphoning

A

Vented loop

71
Q

A location chosen on a nautical chart, as a destination or a place to change course, e.g.

A

Waypoint

ASA 104 (4 decks)

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