Proper line handling is one of the most fundamental practical skills in seamanship. A vessel's mooring configuration determines how well it holds against wind, current, tidal rise, and surge. Getting the arrangement wrong leads to lines parting, vessels surging along the berth, or — in worst cases — vessels breaking free.
The six standard mooring lines
A standard mooring configuration uses six lines, each with a specific function:
- Headline — forward, leads ahead to prevent the bow from falling off
- Bow breast — forward, leads directly abeam to hold the bow against the berth
- Forward spring — leads aft from forward; prevents the vessel from moving ahead
- After spring — leads forward from aft; prevents the vessel from moving astern
- Stern breast — leads directly abeam from aft to hold the stern against the berth
- Sternline — leads astern to prevent the stern from falling off
Essential nautical knots
The Knots & Lines game also tests identification and tying of the knots required on USCG deck exams: bowline, cleat hitch, clove hitch, figure-eight, round turn and two half hitches, reef knot, rolling hitch, and the eye splice. Each has a specific use case — a bowline for a temporary eye at the end of a line, a rolling hitch for attaching to a standing rope under strain.