YM-OFFSHORE-L1.4

Heavy weather and seamanship

Offshore the skipper must be ready to meet weather that a coastal sailor would simply avoid by staying in harbour, and to keep the boat and crew safe through it. This lesson covers preparing for and handling heavy weather at sea.

Anticipate and prepare

Heavy-weather seamanship begins long before the wind arrives. The skipper reads the forecast and the sky, and prepares the boat and crew while it is still easy: reducing sail early and progressively, securing everything on deck and below, closing and dogging hatches, rigging jackstays and briefing the crew to clip on. A boat prepared in good time rides out weather that overwhelms one caught unready. Reefing early keeps the boat balanced and under control, which is the whole aim.

Tactics in heavy weather

  • Heave-to: back the headsail against a reefed main with the helm to leeward, so the boat lies quietly and makes slow drift — the classic way to rest the crew and wait out a blow.
  • Run off before the sea under reduced sail, keeping the boat under control and avoiding being pooped or broaching.
  • Lie to a sea anchor or trail a drogue to hold the boat's attitude to the sea, as suits the boat and the conditions.
  • In all tactics, keep the crew safe below where possible, clipped on when on deck, and manage their fatigue and morale.

WARNING — Reef early and prepare early Everything is harder once the weather is on you. Reduce sail, secure the boat and brief the crew while it is still easy; a boat prepared in time stays controllable in conditions that break an unprepared one.

TIP — Heaving-to buys you time When the crew is tired or the situation needs thinking about, heaving-to slows the boat, quiets the motion and gives the skipper time to rest the crew, fix a problem or wait for the weather to ease.

Practice questions

5 questions
recallcore

recall · core

A sound general principle for meeting heavy weather offshore is to: (a) Wait until overpowered before reefing (b) Reef early and prepare the boat and crew before it arrives (c) Increase sail to get through faster (d) Send everyone below and steer alone indefinitely

recallcore

recall · core

Heaving-to is used to: (a) Sail faster downwind (b) Make the boat lie quietly to rest the crew or wait out a blow (c) Anchor in deep water (d) Increase speed to windward

recallcore

recall · core

Reefing early in worsening weather keeps the boat: (a) Faster but heeled (b) Balanced and under control (c) Harder to steer (d) Overpowered

recallcore

recall · core

A drogue or sea anchor is used to: (a) Measure depth (b) Hold the boat's attitude to the sea in heavy weather (c) Signal distress (d) Increase speed

recallcore

recall · core

Preparing for heavy weather includes: (a) Opening all hatches (b) Securing the boat, closing hatches, rigging jackstays and briefing the crew to clip on (c) Removing lifejackets (d) Turning off the bilge pump

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