Definitions

riding-sail

Ketch

[kech]

A ketch is a sailing craft with two masts: a main mast, and a shorter mizzen mast abaft (rearward) of the main mast. Both masts are rigged mainly fore-and-aft. From one to three jibs may be carried forward of the main mast when going to windward. If a ketch is not rigged for jibs it is called a cat ketch, sometimes called a periauger. On older, larger ketches the main mast may in addition carry one or more square rigged topsails. A ketch may also carry extra sails, see below.

The lowest fore-and-aft sail on the main mast is called the mainsail, while that on the mizzen is called the mizzen sail. These may be any type of fore-and-aft sail, in any combination. The Scots Zulu, for example, had a dipping lug main with a standing lug mizzen.

The ketch is popular among long distance cruisers as the additional sail allows for a better balance, and a smaller more easily handled mainsail for the same overall sail area. It also allows sailing on mizzen and jib only without introducing excessive lee helm, and in an emergency can be quite well steered without use of the rudder. The ketch is a popular rig in northern European waters where sudden increases in wind strength sometimes requires a rapid reefing: the mainsail can be dropped, reducing sail and leaving a balanced sail-plan with jib and mizzen set.

Running before the wind or reaching across the wind, a ketch may carry extra sails such as a spinnaker on the main mast, and a spinnaker or (mizzen staysail) on the mizzen mast.

Similar rigs

The ketch rig is often confused with a yawl. The difference is that the ketch has her mizzen mast forward of the rudder post or waterline thus having more sail area, which contributes significant forward propulsion, whereas the mizzen on a yawl is aft of the rudder post and is used primarily to balance the sail plan (and as a riding sail while at anchor). This is often a matter of intent rather than a physical difference.

The ketch rig can be distinguished from the similar two masted schooner rig by the shorter aftermost mast on the ketch. A schooner has the shorter mast forward. In the case where both masts are approximately the same height, the rig with the larger sail forward is usually called a ketch, while the rig with the larger sail aft is a schooner.

References

See also

Sail-plan

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