Anti-Sea Sickness On Cross-Channel Ship. "Brian" Calculates Roll. Fitted for the benefit of those who suffer from sea-sickness, is this stabiliser fin on the British railways cross-Channel vessel "Invicta". A "golden arrow", Dover-Galais ship, the "Invicta" was completed at the outbreak of the war, and used by the royal navy in the raid on dieppe, She has just had an extensive overhaul here, during when new Denny Brown stabilizers were fitted. November 22, 1949.