Mooring Warps - Size Guide

General guide for determining the size of your mooring lines

Important Decision Factors:
Displacement to Length ratio i.e. is your yacht relatively light or heavy for her length?
Mooring Configuration e.g. alongside, stern to, fore and aft or on a swinging mooring. N.B. the number of warps that share the load is a major factor.
Exposure: e.g. fetch, tide and chop.

1. Selection process for General Use Mooring Lines (Shoreside):

1. Find the column in the table below that best represents your Boat Length Overall.
2. Compare your displacement with the tonnage listed.
3. If it is greater than displayed in your column in the table, consider moving across to the next column to increase the diameter.
4. Have a good look at the mooring lines on neighbouring yachts with a critical eye and judge whether your set up should be the same or whether you can make improvements
5. Consider whether an upgrade would enhance your mooring convenience
6. Consider adding anti chafe measures and/or compensators for peace of mind and less replacement costs

N.B. LIROS Super Yacht Mooring Line Article 01300 is the recommended dockline for yachts over 22 metres LOA

2. Selection process for a Single Point or a Double Point Mooring Configuration (Permanent Anchor Mooring):
Single Point generally means a Swinging Mooring
Double Point could be e.g. Fore and Aft between piles

1. Find the column in the table below that best represents your Boat Length Overall.
2. Compare your displacement with the tonnage listed.
3. If it is greater than displayed in your column in the table, consider moving across to the next column to increase the diameter.
4. Take advice on local conditions and check the benchmark size from the table below against other similar sized boats moored in your area.
5. Have a good look at the mooring configurations on neighbouring yachts with a critical eye and judge whether your set up should be the same.
6. Consider whether you can make any improvements in terms of mooring convenience and anti chafe measures.

2. Selection process for a Rope/Chain/Rope Bridle (Permanent Anchor Mooring):

1. Find the column in the table below that best represents your Boat Length Overall.
2. Compare your displacement with the tonnage listed.
3. If it is greater than displayed in your column in the table, consider moving across to the next column to increase the diameter.
4. Consider the application for your bridle - Will it be used as a single or double mooring point or as an anti chafe mechanism to protect your regular lines