Specification (machinery) for Black Swan class sloops
150 page specification for building the Black Swan class escort sloop, 1937 Programme and with additional documents relating to the 1940 programme of modified Black Swan class sloops (ADT0923.1 and ADT0932.2).
Part 4 - Machinery.
Corrections made to pages 83, 118, 53, 61.
Stamped: 'DO NOT DESTROY to be returned to the Admiralty on the completion of contract.'
Part 4 - Machinery.
Corrections made to pages 83, 118, 53, 61.
Stamped: 'DO NOT DESTROY to be returned to the Admiralty on the completion of contract.'