ASA 105 Coastal Navigation Exam

ASA 105 Coastal Navigation Exam V1 (Latest Update 2025 / 2026 Update) Questions with Answers | Grade A | 100% Correct (Verified Solutions)

Question:

Another term for sea level.

Answer:

Mean level

Question:

Term for the lowest possible tide, chart depths are measure from this point.

Answer:

Datum

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Question:

Measurement from datum to top of dry surface. (Land, rock, coral, etc...)

Answer:

Drying height

Question:

Carrying over 60 in equations. (Not 100)

Answer:

Time math

Question:

Tide table section using main reference stations for tides.

Answer:

Table 1

Question:

Tide table section that corrects for subordinate stations. (Harbors, etc...)

Answer:

Table 2

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Question:

• data points in Table 1.

Answer:

Month, day, time, height (feet and meters), True degrees (Ebb, flood)

Question:

• data points in Table 2.

Answer:

Number, place, coordinates, differences, ranges, mean

Question:

Added or subtracted from reference station slack water and max current times.

Answer:

Time differences

Question:

Multipliers of reference station velocities for max ebb and max flood.

Answer:

Velocity ratios 3 / 4

Question:

The drift measured in knots.

Answer:

Velocity

Question:

Tide table section listing velocities and times.

Answer:

Table 3

Question:

The single most important element in fog navigation.

Answer:

DR plot

Question:

Fog navigation strategy that involves crossing a certain depth back and fourth until target is reached.

Answer:

Running a depth curve

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