ASA 105 Coastal Navigation Exam

ASA 105 Coastal Navigation Exam V2 (Latest Update 2025 / 2026) Questions and Verified Answers | Grade A | 100% Correct

Question:

What items do you need to perform coastal navigation in an effective manner in local area?

Answer:

-navigation charts and Light List -steering compass with deviation table -depth sounder or lead line -speed and distance instruments -protractor triangle, parallel rules and dividers -pencil, eraser, notebook, and simple calculator -VHF radio -hand bearing compass and pelorus watch or clock

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Question:

Beyond the local area, a prudent navigator should also consider the following:

Answer:

-GPS -Radar -AIS (Automatic Identification System) -Barometer -Weather Fax or Satellite Weather Receiver NAVTEX Receiver

Question:

What plotting tools are needed for navigation on a small boat in coastal waters?

Answer:

-parallel rules -protractor triangule -dividers -simple calculator -pencil -eraser

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Question:

What are the three primary plotting sheets?

Answer:

-position plotting sheets -universal plotting sheets -radar plotting sheets

Question:

What is variation ?

Answer:

The difference between True North and Magnetic North as measured on a particular date and location on earth. Changes can be from none to as much as 150°

Question:

What is deviation?

Answer:

The error between Magnetic North and Compass North.

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Question:

Compass inaccuracy result from two sources:

Answer:

• defects in the compass itself
• magnetic influences within the boat

Question:

Formula for calculating distance

Answer:

speed x time

Question:

What is the use of a NEVTEX receiver?

Answer:

provides text of weather forecasts, navigational hazards, emergencies, damage to navigational aids and other safety information

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