HMCS Prince David was one of three Canadian National Steamships passenger liners that were converted for the Royal Canadian Navy (RCN), first to armed merchant cruisers at the beginning of Second World War, then infantry landing ships (medium) or anti-aircraft escort. For three years, they were the largest ships in the RCN.
The three 'Prince' ships were a unique part of Canada's war effort: taken out of mercantile service, converted to armed merchant cruisers, two of them (Prince David and ) were reconfigured to infantry landing ships and one () to an anti-aircraft escort; all three ships were paid off at war's end and then returned to mercantile service.
In the early part of the war, as armed merchant cruisers equipped with antique guns and very little armour, Prince David and her sisters were sent to hunt enemy submarines and surface ships, tasks better suited to warships. As the needs of the RCN changed, so were the 'Prince' ships able to adapt to new roles. Their flexibility offered the RCN greater scope and balance in its operations. They did not function as did the bulk of the Canadian fleet: no rushing back and forth across the ocean, cold and damp, chained to 50 degrees North. Prince David and her sisters, each with two separate employments, roamed most of the navigable world forming a little navy apart.
Passenger ship (1930–1939)
West Coast service
Three ships, Prince David, and were ordered in 1929 from Cammell Laird & Co. by the Canadian National Railways subsidiary CN Steamships to operate as small luxury liners on the West Coast of Canada. The specifications for all three ships had been identical: three decks, three funnels, cruiser sterns and accommodation for 300 passengers. Each had cost $2,000,000 at completion and with a speed of , they were among the fastest ships in the Canadian registry. Named after David E. Galloway, a vice president of Canadian National Steamships, Prince David arrived on the West Coast in the summer of 1930 and was put on the Vancouver – Victoria – Seattle daily service. However, the decline in trade due to the Depression had made it impractical for all three ships to operate in British Columbia waters.
West Indies service
In 1932, Prince David and Prince Henry were sent back east to join the Canada – West Indies service. While on a voyage south, Prince David ran aground on the North-East Breaker at Bermuda on 13 March 1932 and remained hard aground for six months. Salvagers determined that the cheapest course was to turn her back to her owners, Canadian National Steamships, who eventually got her off, refitted her and sent her back for another four years' service. Prince David was laid up at Halifax, Nova Scotia in 1937.
By the late 1930s, and with war looming, the Canadian chief of the Naval Staff had designated the three 'Prince' ships as candidates for conversion to armed merchant cruisers, for the task of convoy escort. During the protracted negotiations for the CN ships, all three vessels had been inspected by the Naval Service and specifications drawn up. It was recognized that the task of converting the fast liners would not be an easy one. Their hulls and engines were basically sound. Prince Robert, which had had no accidents and had been well maintained, was to present no problems. Her sister ships, on the other hand, were a different story: both were in need of major repairs.
Prince David was suffering from neglect, with a badly fouled hull, rotten deck planks and bulkheads rusted thin. Holes in the deck plating, crystallized valves and decrepit auxiliary engines augured an expensive refit as well as conversion.
Preparing for war
When Canada officially declared war on Nazi Germany, 10 September 1939, the Royal Canadian Navy consisted of six destroyers, five minesweepers, two training ships and a mobilized strength of 366 officers and 3,477 ratings including reservists. The Naval Service lost no time in making arrangements for the conversion of the 'Princes'.