Who can help me where Flt Sgt G. S. Honey and crew were picked up by Walruss aircraft of 277 Squadron on 23 June 1943? Is there any data in Norman Frank's book?

F/S Honey and his crew set off on June 22 1943 in Halifax JD206 from Pocklington, Yorkshire. It was bound for Mulheim, the raid of 22/23 June 1943. On the way in, while flying over Overflakke, the bomber was hit by flak. Three engines were put out of action and, with only the starboard outer running, Honey had to put the aircraft into a dive to avoid stalling. As parachuting into the sea was not the best option, after jettisoning the bomb load Honey elected to ditch. This was accomplished successfully in the bright moonlight and the crew took to the dinghy. At first light a drogue was raised and was seen by low-flying Mustangs at 06 25hrs. Later in the day Typhoons flew over.

Eventually two No 277 Squadron Walrus amphibians arrived. One boarded Honey and another member of the crew and took off for Martlesham. The other Walrus, too heavily loaded, was unable to become airborne and proceeded to taxi towards England. The situation was relieved when the Halifax crew were transferred to a motor gunboat from Felixstowe. (IWM CHI0776)

Question is: where were they when tey were picked up: near the coast of Holland? Other sources say near Le Havre....We (foundation WO2GO) want to re-tell there story as part of the history of the war in the air above Goeree-Overflakkee