a metric set and could provide target ranging and bearing information. The centimetric Type 272, a target indication radar with plan position indicator (PPI), was fitted to the front leg of the foremast. Following the loss of Latona to air attack, the surviving ships were re-armed to remedy the shortcomings in anti-aircraft defence. Six single Oerlikon 20 mm cannons were initially added on P Mark III pedestal mountings, although these were later replaced by powered twin Mark V mountings. Ariadne and Apollo had two twin Mark IV "Hazemeyer" mountings for Bofors 40 mm guns sited amidships, replacing the pom-pom in 'Q' position, and these mounts carried their own Type 282 Radar for target ranging; Ariadne had an additional "Hazemeyer" mounting in 'B' position, replacing the 4-inch guns. In July 1945, Ariadne was refitted in the United States for far eastern service, when the Bofors mounts were replaced by American pattern models (Mark I) with off-mounting "simple tachymetric directors" (STD) fitted with Type 282 Radar and the Oerlikon mounts regunned with Bofors guns (this combination was known as the "Boffin"). Service Although they were effective ships in their intended role, the combination of high internal capacity and exceptionally high speed meant that they were equally valuable as fast transports. As such, for much of their service, they were used for running supplies, particularly men and matériel, to isolated garrisons such as during the Siege of Tobruk and Malta in Operation Harpoon. With three funnels and the outline of a destroyer, was camouflaged to appear like the Vichy French "contre torpilleurs" (large destroyers) . For this, a false bow was fitted, funnel caps were added, the mine chutes were plated over and a false deckline was painted on to camouflage the high flush-deck. Manxman received a similar disguise to pass for the Vichy contre torpilleur Léopard so she could pass Corsica and mine the approaches to Livorno. On 25 October 1941, Latona was hit by a bomb in the engine room, causing a serious fire that spread to the munitions she was carrying and resulting in her loss. Welshman was torpedoed and sunk by in 1943. Manxman took a torpedo in her engine room but survived, although repairs took two years. Apollo, Ariadne and Manxman survived the war and saw post-war service, with their pennant numbers changed from "M" to "N". Apollo served as a despatch vessel and Manxman as a mine