SEAL is an acronym for Sea, Air, and Land; the environments where U.S. Navy SEALs train and operate. This book explores the sea capabilities of our nation's foremost special operations commandos, and is the second of a three-volume trilogy published by Phoca Press. The first, Air Capabilities of the U.S. Navy SEALs, by Captain (SEAL) Norm Olson and Commander (SEAL) Tom Hawkins was published in December 2017 and is available at phocapress.com. The land capabilities narrative completes the trilogy. This book provides perspectives regarding:

• Naval Special Mission Units
• Evolution of Combat Diving
• Combat Swimming and Diving
• World War II Maritime Mobility
• Surface Ship Support Capabilities
• Submarine Capabilities Development
• Korean War and Vietnam Operations
• Office of Strategic Services Maritime Unit
• Combatant Submersibles - SEAL Delivery Vehicles
• Advanced Technology Underwater Breathing Apparatus

This book explores the daring and innovative sea capabilities of our nation's foremost special operations commandos, and is the second of a three-volume trilogy. Author Tom Hawkins is a retired Navy SEAL officer who led the development of maritime capabilities in combat diving, and submarines and submersible operations.