35 ft Fast Motor Boat Type III (Barge)

Note: type III designation is my own

Source: https://navymuseum.co.nz/explore/by-collections/ships/ships-boats/

Source: https://navymuseum.co.nz/explore/by-collections/photographs/courage-of-the-everyday

Source: https://navymuseum.co.nz/explore/by-collections/photographs/courage-of-the-everyday/