n. a decked launch or large whaleboat equipped with a single sail and a modest motor, widely used in the Eastern Arctic and patterned on a type of whaler deriving from Peterhead, Scotland.
1940  . . . when our Peterhead boat had been fully provisioned with tea, coffee, canned goods. . . we started. . . .
1959  Simonee got his boat, a one-masted schooner with engine, a modified version of the type known widely in the north as a peterhead and costing about $8,000.
1966  . . . usually only the larger fully-decked "Peterhead" boats are used for travelling.