A graphical adventure game, second installment in the "Meurtres" series by French editor Cobra Soft.
The back of the UK edition says:
"Murder on the Altantic takes place in the thrilling 1930s atmosphere of Le Bourgogne, a luxurious transatlantic liner. You play the part of the detective who finds himself mixed up in murder against a background of pre-war tensions, transatlantic speed records, spies, champagne and masked balls.
Beside the computer game program, the game comes with actual ship reports, love notes, letters, coded informations, photographs, a bullet case, button, length of wiring and lots more.
There are 40 people to cross-examine, ranging from glamorous movie stars, jazz musicians and chambermaids."