Anchoring and Mooring Operations Flashcards

A 'breast line' used in mooring is a line that runs:

Answer: At a right angle from the vessel's side to the dock

A breast line runs perpendicular (at 90 degrees) from the ship's side to the dock, preventing the vessel from moving away from the berth.

What is a 'spring line' used for when mooring?

Answer: To prevent the vessel from moving forward or aft along the dock

Spring lines run diagonally forward or aft along the dock to prevent fore-and-aft movement of the vessel.

When taking a vessel's mooring lines to a dock, the correct order for making fast is typically:

Answer: Bow line, stern line, springs, then breast lines

Standard practice is to first secure the bow and stern lines to prevent the vessel drifting away, then springs and breast lines to fine-tune position.

A 'heaving line' is used in mooring operations to:

Answer: Haul a heavy mooring line across to the dock

A heaving line is a lightweight line thrown to the dock or another vessel to pull a heavier mooring hawser across the gap.

What is a 'chock' in the context of mooring a vessel?

Answer: A fairlead fitting that guides mooring lines through the bulwark

A chock is a deck fitting that guides and supports mooring lines, reducing chafe and directing the line at the correct angle to the dock.

When a mooring line is described as having too much 'sag' or 'slack,' the correct action is to:

Answer: Take in (heave) the line to reduce slack and prevent chafe

Excess slack in a mooring line allows the vessel to surge and can cause shock loading, so the line should be heaved in to maintain proper tension.

A 'buoy mooring' involves the vessel being secured to:

Answer: An anchored floating device with an attached mooring pendant

A buoy mooring uses a floating buoy that is held in position by its own ground tackle, and the vessel attaches to the buoy via a mooring pendant or hawser.