Procedures for anchoring
The scope of chain or warp you need depends on the maximum depth of water you expect during your stay
- Chain = 4 x depth (example: Water depth 5m = 20m of Chain
- Warp/rope = 6x depth (example: Water depth5m = 30m of warp
A ship’s hawsepipe is the pipe passing through the bow section of a ship that the anchor chain passes through.
Spurling pipe – a pipe or tube through which an anchor chain passes to the chain locker below the deck of a ship.
Selecting an anchor berth
- Shelter from wind/swell/tidal stream
- Tidal rise and fall
- Nature of the seabed
- Swinging room-other boats/hazards etc
- A good mixture of sand, mud, and shingles are safest to anchor on.
- Two Anchors in Narrow Channels or creek (Fore and Aft)
- Anchoring in heavy weather, Set Two anchors fore at 45 Degrees to each other
Types of Anchors
- Bruce: Good holding to weight ratio- very awkward to stow in small anchor locker.
- Fisherman: Traditional type, good for a rocky and weedy bottom, poor holding power in sand and mud.
- CQR or Plough: Good holding to weight ratio -hard to stow and moving parts can capsize.
- Danforth: Good Holding to weight ratio -stows flat, can be hard to break out of the mud.
- Delta: Good Holding to weight ratio designed to stay on bow roller for self-launching.
Check the seabed, See what the chart says about the seabed. Is it suitable for your anchor?
- S. Sh. G – Mixed: Where the seabed comprises a mixture of materials, the main constituent is given first. e.g. Sand, Shells, and Gravel
- S. Sh – Mixed: Sand and Shells
- R – Rock, Rocky
- Sn – Shingle
- M – Mud
- G – Gravel