Association, B. S. R. (1971). Shaft alignment 1966-1974. Wallsend : British Ship Research Association.
Lua i Stíl Chicago (17ú heag.)Association, British Ship Research. Shaft Alignment 1966-1974. Wallsend : British Ship Research Association, 1971.
Lua MLA (9ú heag.)Association, British Ship Research. Shaft Alignment 1966-1974. Wallsend : British Ship Research Association, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.