Very clever Creese, thanks. Tug and pilot boat owned by the Portuguese government and destined for the colony Mozambique.
IMO number: 5067754
Type of ship: TUG
Gross tonnage: 475 tons
Year of build: 1939
Builder: NIESTERN SANDER DELFZIJL - DELFZIJL, NETHERLANDS, yard no. 220.
Later name: CHAI as from 1979 Dec 31
Last known flag MOZAMBIQUE
1500HP , 2 german built oil engines;a similar tugboat for Mozambique service was the italian built "Cabo Delgado" ,377grt/31 and also Niestern made tugboat "Bissau" a 200 ton vessel for African overseas territories.