Tons GRT Near Coastal Examination 100

Coast Guard Mate 1,600 Gross Registered Tons (GRT) Near Coastal Examination 100 Practice Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

Subjects include: Navigation General, Deck General, Rules of the Road,

Safety, Seamanship, Stability, Tides/Currents, Meteorology, Communications.

• A flashing light exhibits 60 flashes per minute. What is its characteristic?
• Quick
• Very Quick
• Ultra Quick
• Interrupted Quick

Rationale: Very quick flashing is 80–160 flashes per minute; 60 fpm is

classed as quick to very quick, but Coast Guard exam standards classify ≥60 as very quick. 1 / 4

• The horizontal angle between the keel line and the direction of the wind

is known as:

• Wind deflection
• Leeway angle
• Drift angle
• Crab angle

Rationale: Drift angle is the angle between a vessel’s heading and actual

track caused by wind or current.

• What is the primary purpose of a load line?
• Establish maximum cargo tonnage
• Ensure vessel maintains sufficient freeboard for seaworthiness
• Provide draft information for trim calculations
• Indicate hull stress limits

Rationale: Load lines protect safety by maintaining adequate freeboard to

prevent overloading.

4. The term “neap tide” refers to:

• Highest tides of the month
• Lowest tides of the year
• Tides with minimal range
• Tides during solstice

Rationale: Neap tides occur at first/third quarter moon when tidal range is

smallest. 2 / 4

5. A buoy with red and white vertical stripes marks:

• Starboard-hand channel
• Isolated danger
• Safe water
• Special area

Rationale: Red/white vertical stripes indicate a safe-water mark (mid-

channel).

6. A "frapping line" is used to:

• Keep towline centered
• Pull lines tight during mooring
• Control swinging of a lifeboat during lowering
• Measure anchor strain

Rationale: Frapping lines reduce lifeboat swing in lowering.

7. The pivot point when a vessel moves ahead is located:

• At stern
• Slightly abaft midships
• At or near the bow
• Determined solely by trim

Rationale: Ahead motion shifts pivot point forward, near bow.

8. A “range light system” assists in:

• Measuring deviation
• Maintaining course in channel 3 / 4

• Identifying isolated hazards
• Determining gyro error

Rationale: Range lights align to show vessel on centerline of channel.

9. When anchoring in strong wind, the best tactic is to:

• Let go anchor while moving astern quickly
• Approach slowly, drop anchor, then ease astern to pay out chain
• Drop anchor while stern to wind
• Use short scope to prevent yaw

Rationale: Controlled approach and gradual chain payout reduce shock

load and ensure proper set.

10. A vessel displaying a black cylinder indicates:

• Restricted maneuverability
• Constrained by draft
• Not under command
• Aground

Rationale: Cylinder day shape = constrained by draft.

11. A “tare weight” refers to:

• Cargo weight
• Ballast weight
• Weight of empty container
• Deadweight tonnage
• / 4