BOTH INTERNATIONAL & INLAND Which vessel is...

🔍 Key Concepts

• Day shapes in Rule 27 – Vessels Not Under Command or Restricted in Their Ability to Maneuver • Difference between a vessel’s type (fishing, minesweeper, etc.) and its condition (not under command, constrained, engaged in mine clearance, etc.) • Which conditions are exceptional/emergency versus part of normal operations

💭 Think About

• Look up which vessel condition is indicated by two black balls in a vertical line during the day. What does Rule 27 say about this shape? • Once you know the condition represented by that shape, ask yourself: which of the four answer choices best fits a vessel that is in that condition? • Consider which listed vessels would show this shape only when something is wrong, and which would normally use entirely different shapes or lights for their regular operations.

✅ Before You Answer

• Verify from the Navigation Rules that two black balls in a vertical line is the correct day shape for a specific vessel condition, not a vessel type. • Check what shapes are used for mine clearance, vessels engaged in fishing, and vessels engaged in transferring dangerous cargo and confirm they are different from the illustration. • Be sure the option you select describes a vessel that would be unable to maneuver as required by the Rules, matching the condition indicated by the two-ball shape.

BOTH INTERNATIONAL & INLAND Which vessel is required to display the shapes shown in illustration D007RR below?

a minesweeper

a broken down vessel

vessels transferring dangerous cargo

a fishing vessel

🔍 Key Concepts

💭 Think About

✅ Before You Answer