[Plumper]

Originally Posted by sailingdog

Corsair trimarans don't have a backstay.

As I understand it, trimarans have different demands than monohulls when it comes to rigs. The wide base they sit on allows them to run fixed backs to the amas at such a wide stance that a backstay isn't needed. If they are fast they also never have the wind astern so they don't need to be able to let the main out as far as a monohull does when running. Many also have rotating masts which affect rig design sinificantly.