Mark,
It would seem that many (most? all? it is not very clear) Harlan & Wolff ship's plans from the periods when either the first or the second Melbourne Star was built have been deposited with the Ulster Folk and Transport Museum (UFTM); acording to a 2007 guide to the Public Record Office of Northern Ireland (PRONI) collection of H&W records, these UFTM held plans "are not available to the public in any shape or form at the moment" (see final page of this pdf: **LINK**). I have no idea whether this is still so, nine years later, but you could always try asking the UFTM (see https://nmni.com/Contact); the worst they can say would be "sorry, still no access" …
/Mattias
Edited By Banjoman on 31/03/2016 14:21:59
Edited By Banjoman on 31/03/2016 14:22:10
Edited By Banjoman on 31/03/2016 14:23:28