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Any Deck Officer Endorsement, Revision & Practice Exams

Any Deck Officer Endorsement. Built from official USCG NMC sample examinations (public domain).
Content last updated 12 June 2026

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The real exam is passed module by module: Rules of the Road requires 90%, most other modules 70%. Chart-plotting modules are taken on paper and not included.

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Frequently asked questions

What score do I need to pass the Any Deck Officer Endorsement exam?

You must pass each module separately. Most modules require 70% to pass.

What modules are on the Any Deck Officer Endorsement exam?

The exam covers 1 module: Auxiliary Sail Endorsement.

How many practice questions are available for Any Deck Officer Endorsement?

This page includes free sample questions drawn from the official USCG sample examinations, with a full bank of around 19 questions across all modules available with lifetime access.

Are these real USCG exam questions?

Every question comes from the U.S. Coast Guard National Maritime Center's published sample examinations, which are U.S. government works in the public domain. Wheelhouse Prep is not affiliated with or endorsed by the U.S. Coast Guard.

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No. The free practice tests work in your browser with no signup. Your score history is saved on your own device.

Sample Any Deck Officer Endorsement practice questions

A selection of free questions from the official USCG sample examinations. Use the interactive modules above for timed, scored drills.

When is the VERY BEST time to cross a bar in rough weather?

  1. During the maximum ebb current
  2. During the slack just before the flood current
  3. During the tidal bore
  4. During the slack just before the ebb current ✓

Which is TRUE about a sail when it has been reefed?

  1. The sail area is increased
  2. The sail area is widened
  3. The sail area remains unchanged
  4. The sail area is reduced ✓

When would the sails normally be set in a wing and wing configuration?

  1. If the vessel is wearing
  2. When the vessel is tacking in a head wind
  3. If the vessel is close hauled
  4. If the vessel is sailing with the wind aft ✓
Show all 10 sample questions with answers & explanations

A sailing vessel with the wind coming from 220° relative would be in which situation?

  1. On a broad reach ✓
  2. Close hauled on the starboard tack
  3. Running before the wind
  4. Close hauled on the port tack

Your vessel is drifting with the wind broad on the port beam. The Marconi sail is set and flapping free. When is the maximum drive attained as you sheet in the sail?

  1. When it first takes the shape of an airfoil ✓
  2. When it is filled with a slight flap at the leech
  3. When it is 45° from the apparent wind
  4. When it is at right angles to the true wind

Dacron sails, when not in use, may be damaged under which condition?

  1. If washed with soap
  2. When folded frequently
  3. If left in the sunlight ✓
  4. When stowed wet

You are sailing on a close reach when a strong wind suddenly heels the vessel hard over. Which action should you take to reduce the heeling and yet maintain speed?

  1. Haul in on the mainsheet and steer more towards the wind
  2. Ease the mainsheet and bear more away from the wind ✓
  3. Haul in on the mainsheet and ease the jib sheet
  4. Ease all sheets and bear more into the wind

You are running before a strong wind in a sloop. Which action should be attempted with extreme caution?

  1. Reef the mainsail
  2. Tack about
  3. Jibe ✓
  4. Strike the jib

One of the sailboat's crew has just fallen overboard. Which is the most efficient way to stop the vessel to recover the victim?

  1. Head the vessel downwind
  2. Trim in the mainsheet
  3. Head the vessel into the wind ✓
  4. Ease out the mainsheet

You are at the helm of a sailing vessel under sail on the starboard tack, close hauled, and you are instructed to "head up". Which action should you take?

  1. Turn the wheel to port if you are steering with a wheel
  2. Push the tiller to starboard if you are steering with a tiller
  3. Turn the wheel to starboard if you are steering with a wheel ✓
  4. Hold a steady helm and allow the jib to luff