1942 American bomber ditched in North Sea. All crew saved.

Hello to you aviation experts. My Dad served the RAF on high speed launches of the Air Sea Rescue service in WW2. He is still alive at 94 and he has told me that he crewed on one such launch based in Grimsby, England (HSL144) that went to rescue the crew of an “American bomber” some time before December 1942. In the English North Sea. The amazing thing is that all 10 American crew were rescued alive and he tells me that the plane was still afloat when they arrived at the scene of the ditching. This story seems to me to be very worth investigating. I would love to identify the particular plane. He also said the other day that one of the plane crew was so grateful that he gave my Dad his electric heated flying suit! A family member tells me it was light blue. Can anyone help me out here to identify the plane (presumably a B-17 or B-24) and hopefully the crew? Identifying the bomb group would help. Many thanks if you are able to give me a lead. Thank you.