The brigantine is pretty sweet. With some unique features of its own it will definitely fit well on the seas for those odd numbered crews.
However, when using the brigantine I noticed that I was less efficient with navigation than on a sloop or galleon. This is because the Map on the brigantine is at the complete front end when you go downstairs from the helm.
While the brig does make a nice centerpiece I believe the map and brig should be swapped, to allow easier and quicker access to the map, which is more useful and would be used far more than the brig would.
