Photo File: SI TECH Main Dry Pack

How do you transport your gear needed for a land mission, while keeping it dry during an approach underwater? The answer to this question is the SI Tech Dry Pack. The backpack comes from a Swedish company, but is mainly used by the Navy SEALs - but also by Marine Recons, Army SF, and Deltas. SPARTANAT has examined such a rare specimen that was never available on the civilian market. The backpack looks a bit like a barrel and it lacks shoulder straps. No wonder, as they rely on what works. The Dry Pack is strapped to an ALICE frame if you want to use it as a backpack. Otherwise, the whole system resembles a drysuit: oxygen can be blown into the waterproof pack through a bottle or mouthpiece, allowing it to be buoyant at the desired depth underwater. Air can also be released through another valve on the cover. The details of the Dry Pack are listed on a tag in the backpack:

SI TECH (Made in Sweden) MIL B 53083 Water Proof Bag, LOAD CARRYING.

Tare Weight 19.6 lbs

Gross Weight 80 lbs

US PROPERTY

Operating depth 30FT

Cylinder Pressure 3000psi

NSN 4220-01-295-3430

The tag in the backpack.

View inside the Dry Bag.

View inside the Dry Bag, tag placement.

Cover with valve. Inflator on the left for blowing/buoyancy control with the mouth.

Bottle for blowing/buoyancy control - Markings: CLIFFDIV 5-90 IA11 (Mfg. 1990) - side carry handle.

The back side, where the ALICE Packframe is mounted.

The front exterior pockets with drain holes and the bottom.