This Teeny-Tiny Sub Carries Navy SEALs to Their Next Mission

Photo credit: U.S. Navy
Photo credit: U.S. Navy
  • U.S. Special Operations Command will soon test a new mini-submarine.

  • The Dry Combat Submersible (DCS), will allow U.S. Navy SEALs to ride inside a warm submarine as they approach their target.

  • DCS is an upgrade compared to traditional frogman subs, which require passengers and crew to wear a breathing apparatus and wetsuit.


U.S. Navy SEALs are getting a new underwater ride that could prove vital in this era of big-power warfare.

The Dry Combat Submersible (DCS) is a fully enclosed mini-sub designed to keep SEALs safe and warm as they travel to their objectives. The 30-ton sub can carry up to eight SEAL commandos for 24 hours or more.

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Small, purpose-built mini-subs became popular in World War II as a means of transporting frogmen to conduct missions against enemy warships. The small subs are also used to send small teams of naval special forces to coastal objectives, allowing larger ships to stand off the coastline and remain out of sight.

Today, U.S. Special Operations Command (SOCOM) operates the Mark IIIV SEAL Delivery Vehicle. The Mark VIII is a so-called “wet” submersible, meaning both passengers and crew must wear breathing apparatuses and wetsuits as the sub travels underwater. The lack of a pressurized hull makes the design simpler, but the need to wear protective gear can tire everyone onboard.

Enter the DCS, which is designed to overcome the problems of a “wet” sub...

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