Pathfinder class survey ship

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The Pathfinder / T-AGS 60 Class of Oceanographic Survey Ships are owned by Military Sealift Command and operated by Horizon Lines, LLC for the Naval Oceanographic Office("NAVO"). They have entirely civilian crews with scientists from NAVO[1]. Depending on area of operation, they occasionally have a Force Protection detachment (usually U.S. Navy Mobile Security Squadron).

There are six ships in the Pathfinder class. They carry the USNS prefix:

• Pathfinder (T-AGS 60)
• Sumner (T-AGS 61)
• Bowditch (T-AGS 62)
• Henson (T-AGS 63)
• Bruce C. Heezen (T-AGS 64)
• Mary Sears (T-AGS 65)