Module 1 - Nautical Terms

Common Verbs and Actions

What you will learn

Interpret make fast, cast off, fender, tack and gybe and recognise the principal boom hazard during a gybe.

Routine boat-handling verbs describe securing and releasing lines, protecting the hull and changing tack through the wind.

To make fast means to secure a rope. To cast off means to release the mooring lines and depart. Fenders are inflatable cushions hung over the side to protect the hull when alongside a pontoon or another vessel.

To tack is to turn the bow through the wind when sailing upwind. To gybe (or jibe) is to turn the stern through the wind when sailing downwind — this requires care as the boom can swing across violently.

Translate the words into a controlled manoeuvre

Before departure, the crew rigs fenders, prepares lines for release and waits for the skipper's order to cast off. Later, a planned gybe is briefed so the boom and mainsheet are controlled and every person stays clear.

  1. 1. Prepare

    Rig fenders and identify which lines are to remain made fast until the order is given.

  2. 2. Communicate

    Repeat a cast-off or sailing instruction if the sequence or responsible crew member is unclear.

  3. 3. Control the boom

    For a gybe, follow the boat-specific plan, control the mainsail and keep heads and bodies out of the boom and mainsheet path.

Sense check: A gybe is not complete merely because the stern passed through the wind; the boom, sail and crew must remain under control throughout.

Common mistake or limitation

  • Casting off does not mean releasing every line at once. The order depends on wind, stream, berth geometry and the agreed departure plan.
  • A gybe can produce a fast, heavily loaded boom movement. This short definition is not a substitute for practical instruction on the actual boat.

Recap

  • Make fast means secure a line; cast off means release it as part of a departure.
  • Fenders protect the hull while alongside but do not replace a controlled approach and correctly led lines.
  • A tack takes the bow through the wind; a gybe takes the stern through and requires deliberate boom control.

Optional quick check

Section 8 of 8

Which action turns the stern through the wind and requires particular care around the boom?

Choose one answer

Continue studying Nautical Terms

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