Plan - Plan / Line Drawings - Portland Harbour Trust Slipway Bilge Blocks Trawler Halcyon, Victoria, 23/04/1980 Historical information PORT OF PORTLAND AUTHORITY Physical description Line drawing Portland Harbour Trust slipway bilge blocks trawler 'Halcyon'. Scale 1:25Drawing no.4495 Inscriptions & markings Front: '42' - black texta, top right corner