The Longshore Lowdown

Full Guide · Last Checked: October 5, 2026

Mooring and letting go (terminology and safety awareness)

A short line-job orientation: tension, recoil, line loops, water exposure, and the importance of trained supervision.

Educational orientation only. Follow employer hands-on training, approved procedures, manufacturer instructions and site rules. These guides do not authorize equipment operation.

Sample excerpt — the first section of this authored guide.

A small guide for a serious exposure

Mooring secures a vessel with lines; letting go concerns releasing that mooring arrangement. This guide does not teach either task.

A mooring line under tension contains stored energy. A snagged line can suddenly release and become tensioned.

Snap-back describes dangerous recoil associated with tensioned-line failure. A bight is a loop or curve in a line.

UK Maritime and Coastguard Agency guidance warns against standing in a bight. It also warns that danger can extend beyond painted snap-back markings.

This is maritime safety guidance, not a statement of U.S. law. Ask for the actual employer’s line-job hazard briefing and restricted areas.

S26 · UK Maritime and Coastguard Agency ↗

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Sources and limitations

MGN 592 Amendment 2

UK Maritime and Coastguard Agency · Last Checked: October 5, 2026

UK guidance, not U.S. law. No line sequence, positioning diagram or safe-distance formula.

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