名詞 catamaran:

1. a sailboat with two parallel hulls held together by single deck

cat.a.ma.ran

n.Nautical （名詞）【航?！?/i>
A boat with two parallel hulls or floats, especially a light sailboat with a mast mounted on a transverse frame joining the hulls.
雙體船：有兩個平行的船殼或浮體的小船，尤指桅桿豎在連體船殼的一個橫向支架上面的輕型帆船
A raft of logs or floats lashed together and propelled by paddles or sails.
捆扎筏：由圓木或浮體捆扎起來的用槳或帆推動的筏子

來源：
Tamil kaúúumaram
泰米爾語 kaúúumaram
kaúúu [to tie]
kaúúu [捆]
maram [tree, log]
maram [樹木，圓木]