When the 73 crashes into the dock most of the crated vegetables fall forward into the water with hardly any landing on the deck of the ship but in the next shot the ship is covered with the debris.
To make himself sound a little more American, Fuji exclaims; "Crazy Daddio!", a phrase derived from beatnik patois of the 1950s, and certainly not of World War Two vintage.
When the crew find themselves in a wine cellar, one proclaims;"This must be the tomb of the little old winemaker!", which references a character in a series of Italian Swiss Colony wine commercials widely seen in the early 1960s.
Fuji is seen as having stowed-away on the boat on its trip from the South Pacific. It would have taken the transport 2 to 3 weeks to get from their South Pacific base, which was in the Solomons area, to Italy, even through the Suez Canal, possibly by way of Australia and India. How he survived for this time, regarding food and water, and other essentials, was not stated.