On [@Pepperm1nts] suggestion my idea:

[hider=Island of Aeche]

A fortress rising from the sea Aeche has long been the principal fortification of the west coast, a stronghold ready to repel would be invaders from distant lands and withstand any siege.  The island itself maintains a fleet of its own and while not so famous as those of Kawachi the shipwrights of Aeche are known for their rugged designs.  This durable nature is not however a result of any militant intention, but rather the necessity of strong vessels for use in whale hunts.  The largest export of Aeche whale oil has long been vital to the local economy and in recent years the trade has attracted numerous western merchant guilds many of whom now base themselves on the strategically located island.  [/hider]