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| USCG/OSS Domestic Cooperation |
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| During World War II the Office of Strategic Services acquired a number of cabin cruisers to conduct maritime training operations in the Washington, D.C. area, referred to by the OSS as Detachment "D"on the Potomac River. Two such vessels were the MARIBEL and the MARSYL. Using Coast Guard Captain of the Port (COTP) authority, the OSS was able to license these "cruisers," obtain slots at local marinas and yacht clubs when up in the D.C. area, and receive special COTP protection for their maritime training missions. Because the Coast Guard and the Navy had acquired had to conduct an extensive search to identify vessels between 70-90' in length to prepare for their maritime training mission. According to the correspondence obtained form the declassified OSS files at the National Archive, this process to identify vessels for OSS Detachment "D" began around October of 1942. As noted in an "inter-office OSS memo" between LT Glenn (USN/OSS) and Mr. Gilpatrick (OSS civilian) dated 14 July 1943, it appears that in addition to the special maritime training at Detachment "D", the use of a radio set up called a "Buzzer Set" was requested for "code training." Coordination between the Coast Guard Captain of the Port, Captain H.G. Hemmingway, and OSS Detachment "D" began in June 1943 in order to coordinate the special protection zones required for maritime training. The MARIBEL remained as a training platform for Detachment "D" until 15 January 1944 when it was returned to its owner. Other vessels such as the WETHEA and SPINDLE (photos/documents below) were also considered for service for Detachment "D" but the record is not clear on whether they were ever placed in to service for the OSS. (To enlarge the documents and photos, right click and save or copy the document/photo desired) Source: National Archives RG226_328_92_9 |
| Letter from Commander Woolley (OSS) to the Coast Guard Captain of the Port (COTP) requesting support. 15 June 1943 Source: National Archive RG226_328_92_9 |

| SECRET letter from CAPT Hemmingway, USCG COTP, to CDR Woolley (OSS Detachment "D") confirming an agreement to provide"special" licensing and protection support of operations. 16 June 1943 Source: National Archive RG226_328_92_9 |


| Coast Guard Protection Order issued 17 June 1943 to CG patrol craft using USCG Captain of the Port Authority. Issued by S.E. Barron, Chief of Staff, District Coast Guard Officer, Potomac River Naval Command Source: National Archives RG226_328_92_9 |

| Cabin Cruiser WETHEA Source: National Archive RG226_328_92_8 |


| Twin Screw Cabin Cruiser SPINDLE Source: National Archive RG 226_328_92_8 |
| AREA D TRAINING BASE for the Office of Strategic Services Maritime Unit. Spring/Summer 1943 Location: Potomac River, Across from Marine Corp Base Quantico Photo Source: The photo and quoted text were provided courtesy of the Naval Special Warfare Foundation. http://www.nswfoundation.org/ |

| The Simple Sabotage Field Manual was used by the OSS Maritime Unit and Operational Swimmer Groups to become proficient in the use "tools, timing, and targets" in the conduct of sabotage operations. |


| Simple Sabotage Field Manual used by OSS MU and OSG to train and prepare for Sabotage Operations. Source: National Archive Record Group 226-210-123 |