Deck · 2026 NMC sample exam Q450–Q451
Able Seafarer Unlimited, Limited, Special, Special OSV, Sail, Fishing Industry Practice Test
Every module on the National Maritime Center's 2026 sample examination for Able Seafarer Unlimited, Limited, Special, Special OSV, Sail, Fishing Industry: 2 modules, 100 real questions, graded instantly.
The Able Seafarer Unlimited, Limited, Special, Special OSV, Sail, Fishing Industry exam is split into 2 modules, each graded separately. The table below is the National Maritime Center's own 2026 sample examination for this credential, module by module, with every question matched to our bank of released U.S. Coast Guard exam questions. Open a module to practice its questions one at a time, or sit the whole module as a timed exam.
What is on the Able Seafarer Unlimited, Limited, Special, Special OSV, Sail, Fishing Industry exam
| Module | Questions | Illustrations | Practice |
|---|---|---|---|
| Q450 Navigation General - Rules of the Road | 50 | 3 | Practice → |
| Q451 Deck General - Safety | 50 | 1 | Practice → |
| Total | 100 | 4 |
Most modules require 70 percent to pass; Rules of the Road modules require 90 percent.
Q450 · 50 questions · 3 illustrations
Navigation General - Rules of the Road
- 1. INLAND ONLY A power-driven vessel when pushing ahead or towing alongside on the Western Rivers (above the Huey P. Long Bridge on the Mississippi River at mile 1...
- 2. How should a look-out, in the merchant service, report sightings?
- 3. Which term is used to express the maximum distance at which a light may be seen under existing visibility conditions?
- 4. How should a vessel spotted at 45° relative be reported?
- 5. BOTH INTERNATIONAL & INLAND Which signal, other than a distress signal, can be used by a vessel to attract attention?
Showing the first 5 of 50. Start at question 1 and use Next to work through the module →
Q451 · 50 questions · 1 illustration
Deck General - Safety
- 1. Which is a major advantage of the round turn maneuver in a man overboard situation?
- 2. Which statement concerning carbon dioxide is FALSE?
- 3. Which of the signals listed is required to be displayed at night while bunkering at a dock?
- 4. Who has the authority to grant an alternate procedure for oil transfer operations?
- 5. Which would be considered pollution under the U.S. water pollution laws?
Showing the first 5 of 50. Start at question 1 and use Next to work through the module →
Able Seafarer Unlimited, Limited, Special, Special OSV, Sail, Fishing Industry exam FAQ
Q How many questions are on the Able Seafarer Unlimited, Limited, Special, Special OSV, Sail, Fishing Industry exam?
The National Maritime Center's 2026 sample examination for Able Seafarer Unlimited, Limited, Special, Special OSV, Sail, Fishing Industry has 100 questions across 2 modules: Q450 Navigation General - Rules of the Road (50 questions) and Q451 Deck General - Safety (50 questions). Every one is multiple choice with four answers, and you can practice all of them on this page.
Q What modules are on the Able Seafarer Unlimited, Limited, Special, Special OSV, Sail, Fishing Industry exam?
The modules are Q450 Navigation General - Rules of the Road (50 questions) and Q451 Deck General - Safety (50 questions). Each module is graded separately, so you need to pass every one to pass the exam.
Q What score do I need to pass the Able Seafarer Unlimited, Limited, Special, Special OSV, Sail, Fishing Industry exam?
Most modules require 70 percent. The Rules of the Road module requires 90 percent, which is where most candidates fail, so give it the most practice.
Q Are these the real questions?
Yes. They are the questions on the National Maritime Center's published 2026 sample examination for Able Seafarer Unlimited, Limited, Special, Special OSV, Sail, Fishing Industry (modules Q450–Q451), matched to our bank of released U.S. Coast Guard exam questions. The exam you sit draws from the same pools.
Q Can I take a timed Able Seafarer Unlimited, Limited, Special, Special OSV, Sail, Fishing Industry practice exam?
Yes. Subscribers can sit any module as an official sample exam in its published order, timed or untimed, with answers revealed at the end. Free accounts can build one 10-question practice exam and answer questions on every module page.
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