The S-788/G also known as the Lightweight, Multipurpose Shelter (LMS) is a lightweight, high strength enclosure designed specifically for use on the HMMWV.
Selected by the United States Army as its primary electronics platform for wheeled tactical vehicles, the S-788 LMS contains the latest advances in shelter design technology. The rugged design of the S-788 endures demanding off-road military operations while protecting on-board electronics from potential hazards. C-130 drive-on/back-off capability meets your system transportability requirements.

Weighing only 608 lbs. (weight per MIL-S-44408 Type I - with mounting kit add 88 lbs.; with pintle extension, add 50 lbs.), the S-788 is capable of accepting payloads up to 3,300 lbs. This impressive strength-to-weight ratio is the result of innovative material engineering. Panel construction consists of aluminum faced, honeycomb-core, hot-bonded panels, on the walls, roof, and floor. With nearly 295 cubic feet of useable interior space, 50% more than the S-250, the S-788 shelter is ideal for most C4I tactical missions.
The S-788 is available in three configurations to meet your specific mission requirements:
Type I - Basic S-788; Type II - S-788 with generator tunnel, escape hatch and CB purge valve; Type III - S-788 with generator tunnel only.
Features & Specifications
Designed to meet the shelter performance specification defined in ASTM-PS-138.
Weight:
Type I: 608 lbs.
Type II: 643 lbs.
Payload: 3,300 lbs.
Roof Load: Snow & ice 40 lbs./sq. ft.
660 lbs. over a 2 sq. ft. area.
Floor Load: 1,000 lbs. over 2 sq. ft. area
without permanent deformation.
Member Loading: Wall, roof and floor tensile load 1,000 lbs. followed by 100 inch-pounds torque load 5/16" - 18 UNC inserts.
Temperature Extremes:
Operating: -65°F to +125°F plus solar load. Non-Operating: -80°F to +160°F.
Heat Transfer: U-factor 0.46 BTU/hr./sq.ft./°F.
RFI Shielding: In excess of 60 dB over 150 KHz to 10 GHz for electric and magnetic fields and plane waves measured to ASTM-E1925.
Watertightness: Tested to 21 inch fording depth and to simulated rainfall.
Lifting Eyes: Four (4) eyes with 3 in. inside clearance. 14,400 lbs. tensile load per corner in any direction.
Features:
- Access Ladder: Standard ladder with external mounting bracket
- Roof Access Steps: Two (2) recessed folding steps in sidewall and one roof handhold
Options:
- Generator Tunnel
- Roof Mounted Escape Hatch
S-788/G(LMS) Downloads
Click to download .pdf version of document.
Literature:S-788
Drawings: S-788