WW2 Christmas card, Good Voyage, Churchill. The message inside the card reads: The Prime Minister, on his passage home in RMS Prince of Wales after the signing of the Atlantic Charter with President Roosevelt, passed through a large homeward bound convoy, to which he made the signal: Good Voyage. Churchill. The signal was received with enthusiasm, and answered with the V flag from every ship. The picture shows the foremast of the Prince of Wales with the signal flying. The pennant at the lower yard shows that the signal is made in the International Code. The three-flag hoist above it reads PYU: Good Voyage. The nine-flag hoist on the port side spells Churchill in full.