ASA Coastal & Offshore Cruising Flashcards
6 cards from real ASA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 ASA Coastal & Offshore Cruising flashcards as text
What is a 'watch system' on an offshore passage, and why is it used?
Answer: A rotation schedule ensuring crew members rest while others maintain the helm and lookout
A watch system divides the crew into rotating shifts so that the vessel is always manned while each sailor gets adequate rest during extended offshore passages.
What does the term 'waypoint' mean in the context of coastal cruising navigation?
Answer: A specific GPS coordinate used as an intermediate destination along a planned route
A waypoint is a geographic coordinate entered into a GPS or chartplotter that marks a specific point along a planned route, allowing the navigator to track progress and course.
According to ASA 106 (Advanced Coastal Cruising) standards, what is the minimum recommended content for a float plan?
Answer: Vessel description, crew list, departure/destination ports, planned route, and expected return time
A float plan should include vessel details, crew information, the planned route and waypoints, departure and arrival information, and expected return so rescuers can act quickly.
What is 'dead reckoning' in coastal navigation?
Answer: Estimating current position using a known starting point, course, speed, and elapsed time
Dead reckoning calculates an estimated present position by projecting ahead from a known past position using the vessel's course, speed, and time traveled — without external fixes.
When planning a coastal passage through a tidal inlet, what is the safest approach timing?
Answer: Enter on a flooding tide near high water to maximize depth and avoid opposing currents
Entering a tidal inlet on a flooding tide near high water provides the most water depth over bars and shoals and aligns current with the vessel's direction of travel.
What is the significance of the 'rhumb line' versus 'great circle' route on an offshore passage?
Answer: A rhumb line follows a constant compass bearing but is longer; a great circle is the shortest distance but requires constant course changes
On a Mercator chart, a rhumb line appears straight and maintains a constant compass course but is longer than the shortest (great circle) path on the earth's curved surface.