Whaleboat

1. A type of open boat that is relatively narrow and pointed at both ends, enabling it to move either forwards or backwards equally well.
2. On modern warships, a relatively light and seaworthy boat used for transport of the ship's crew.
3. A type of vessel designed as a lifeboat or "monomoy" used for recreational and competitive rowing in the San Francisco Bay area and coastal Massachusetts.
4. Informally, any whaling ship of any size.
5. Informally, any vessel engaged in whale watching.