A traditional East African logboat. An outrigger like this is known locally as a Nagalawah. I spoke with its owner yesterday (his father built it). I learned that this particular craft is about seven years old and hewn from a single mango tree trunk. It was modified with a frame of eucalyptus and mangrove poles lashed together with nylon rope.
The nagalawah is the workboat of the east Indian Ocean with a design tradition that goes back a thousand years or more.
It's low tide on the east coast of Zanzibar right now. This one is not going anywhere soon.