Hi! On another thread, while correctly acknowledging Titanic's displacement of 52,310 tons at 34 feet 7 inches, Dave Gittins expressed astonishment at the 'registered displacement' figure of 77,780 tons that I quoted, which appears on the British Registry entries for Olympic and Titanic, and a slightly higher figure for Britannic. H esaid that he had never heard of such a term. It is clear that Titanic did not displace nearly 80,000 tons, but then: what exactly does 'registered displacement' signify? Or has there been an error in all the British registers? Best regards, Mark.