On 1 June 1944 , two K-class blimps of United States Navy ( USN ) Airship Patrol Squadron 14 ( ZP-14 ) completed the first transatlantic crossing by non-rigid airships . '' K-123 '' and '' K-130 '' left South Weymouth , MA on 28 May 1944 and flew approximately 16 hours to Naval Station Argentia , Newfoundland . From Argentia , the blimps flew approximately 22 hours to Lajes Field on Terceira Island in the Azores . The final leg of the first transatlantic crossing was about a 20-hour flight from the Azores to Craw Field in Port Lyautey ( Kenitra ) , French Morocco . The first pair of K-ships were followed by '' K-109 '' & '' K-134 '' and '' K-112 '' & '' K-101 '' which left South Weymouth on 11 and 27 June 1944 , respectively . These six blimps initially conducted nighttime anti-submarine warfare operations to complement the daytime missions flown by FAW-15 aircraft ( PBYs and B-24s ) using magnetic anomaly detection to locate U-boats in the relatively shallow waters around the Straits of Gibraltar . Later , ZP-14 K-ships conducted minespotting and minesweeping operations in key Mediterranean ports and various escort missions including that of the convoy carrying Franklin Roosevelt and Winston Churchill to the Yalta Conference in early 1945 . In late April 1945 , '' K-89 '' and '' K-114 '' left Weeksville NAS in North Carolina and flew a southern transatlantic route to NAS Bermuda , the Azores , and Port Lyautey where they arrived on 1 May 1945 as replacements for Blimp Squadron ZP-14
Yalta Conference
Yalta Conference
K-class blimp