Is your feature request related to a problem? Please describe.
Umiaks are traditional large open-skin boats for transporting families and/or supplies. made from driftwood and/or whalebone and walrus/seal skins.

Describe the solution you'd like
The ability to construct umiaks that can seat multiple persons and/or store large amounts of items for transportation.

Additional context
(From Wikipedia, not fact-checked)
Normally 9 to 10m long and 2 to 3m wide.
They would usually take about 2 walrus skins or about 7-8 seal skins to cover fully.