During mooring, a synthetic mooring line parts under tension while being heaved in by the winch. A deck crew member was standing within what should have been recognised as the snap-back zone. What is the immediate priority?

A. Replace the parted line immediately with a spare and resume at the same pace without further investigation

B. Stop all mooring operations immediately, check on the welfare of anyone in or near the snap-back zone, and do not resume the operation until the cause of the parted line has been assessed and the team re-briefed — treat this as a potential serious injury event requiring full attention, not a minor equipment delay

C. Log the parted line as a routine equipment failure with no further action required

D. Continue mooring with the remaining lines while someone separately checks on the crew member, to avoid delaying the operation

A. Breast lines and spring lines serve identical functions and the names are interchangeable

B. A breast line is always made of wire while a spring line is always made of synthetic rope, by definition

C. A spring line is only used when departing, never when arriving or staying alongside

D. A breast line runs roughly perpendicular to the vessel's centreline, primarily resisting movement away from or toward the berth (off/onshore movement); a spring line runs roughly parallel to the berth, primarily resisting fore-and-aft movement along the berth

A. Lines are typically let go in an order that keeps the vessel controlled throughout the process — often retaining a spring (and sometimes a breast line) until last to control the vessel's swing or to use the spring itself to assist pivoting the bow or stern off the berth, rather than releasing all lines simultaneously and losing control of the vessel's position relative to the berth

B. The order of letting go has no effect on vessel control and is purely a matter of crew convenience

C. Lines must always be let go in the exact reverse order they were made fast, with no exceptions

D. All lines should always be let go simultaneously regardless of conditions, to minimise time alongside