often in combinationA boat having a keel, especially one of a specified type.
（尤指有某种龙骨的）龙骨船
a long-keeler
一条长龙骨船。
Example sentencesExamples
Intelligent shifting of the sail and lateral pressure point due to the special characteristics of the sail mutate the short keeler to become a boat that easily lays on the rudder.
A long keeler usually withstands the actual impact better, if you fail to avoid hitting the rocks.
Others involved a deep keeler, and a sailing catamaran.