CLAM
Compact. Light. Agile. Modular. Battle-proven design rooted in historic polar operations.
Built for Arctic environments and sustained military operations
Single-operator deployment in under five minutes, fully sheltered assembly
Lightweight aluminium frame with high-durability ripstop outer shell
Integrated thermal liner enhances heat retention and reduces condensation
Clamshell access enables rapid CASEVAC/MEDEVAC and equipment handling
Ballast skirt ensures secure anchoring using snow, ice, or field equipment
Available in 16ft and 21ft variants, 6’6” internal clearance
Compact, lightweight system for sled, military snowmobile, or rotary-wing transport
Ideal for Arctic operations, forward deployments, and remote field bases.
The Weatherhaven CLAM shelter takes inspiration from proven polar expedition systems, embodying resilience in the world’s most hostile environments. Engineered for extreme cold weather operations, it combines rugged dependability with advanced materials, delivering mission-ready shelter capability in remote and austere theatres. This system continues Weatherhaven’s legacy of developing deployable infrastructure that supports military personnel across reconnaissance, sustainment, and critical mission operations in some of the harshest environments on earth.
CLAM: mission-ready, rapid deployment, proven survivability.
Example Applications
Rapid-deploy system reduces personnel exposure to extreme conditions.
Speed and protection are critical in cold weather operations, and CLAM delivers both. Its rapid-deploy system enables personnel to erect the shelter from within, minimising exposure to wind chill, frostbite risk, and hazardous conditions. This capability supports fast establishment of protected space with reduced manpower and risk, allowing units to achieve operational readiness within minutes, when time and survivability are mission-critical.
Lightweight thermal liner enhances efficiency in a compact system.
Internally, CLAM is optimised for thermal performance and operational efficiency. A purpose-designed lightweight liner improves insulation, maintaining stable internal temperatures despite rapidly changing external conditions. Despite its high-performance capability, the system remains highly portable and compact, enabling efficient transport to remote operational zones. Its balance of durability, thermal efficiency, and mobility makes it a reliable solution for expeditionary forces.
Specifications
| Specification | Endurance 16′ | Endurance 21′ |
|---|---|---|
| Width | 2.42 m // 8 ft | 2.42 m // 8 ft |
| Length | 4.84 m // 16 ft | 6.36 m // 21 ft |
| Height (middle) | 2 m // 6 ft 6 in | 2 m // 6 ft 6 in |
| Weight | 35 kg // 77 lb | 46 kg // 101 lb |
| Packed volume | 2.8 m x 0.3m x 0.3 m // 110 in x 12 in x 12 in | 2.8 m x 0.3m x 0.46 m // 110 in x 12 in x 18 in |
| 2 full-height zipper C door entrances with arctic flashing | ||
| 24” square port at centre floor | ||
| Stainless marine ventilation port at centre roof | ||
| Clamshell full-end opening for snow medical or equipment entry | ||
| Extended ballast skirt around perimeter | ||
Clamshell access enables rapid casualty evacuation and equipment handling.
CLAM incorporates advanced clamshell end panels that provide immediate access for casualty evacuation, resupply, and mission-critical equipment movement. This feature enhances operational flexibility, particularly in high-tempo or life-saving scenarios where speed is essential. The design integrates tactical efficiency with practical usability, allowing personnel to adapt quickly to changing mission requirements across forward operating bases and temporary deployments.
Options
Structure & Configuration
Aerodynamic tunnel shelter design
16 ft and 21 ft lengths
Ripstop nylon laminated cover system
Multiple color options
Thermal breathable liner system
Extended snow ballast skirt
Breathable laminate materials
Polar Foam insulated floor system
2 full-height C doors with polar flashing
Clamshell end opening for full access)
Expedition snow tunnel entrance
Central floor access port (Velcro sealed)
Snow & ice melting systems (proprietary)
Cable ports & stove pipe socks
roof-mounted adjustable vent
Heating systems (oil-burning heaters)
Compact transport sled compatible
Fully deployed from inside shelter
16’ and 21’ configurations support flexible mission requirements.
Available in two scalable configurations; 16 ft and 21 ft, CLAM adapts to a wide range of operational roles. Its generous internal volume supports applications from temporary accommodation and casualty care to equipment storage and small command posts.
This modular flexibility makes it ideal for units requiring adaptable, scalable shelter systems that evolve alongside mission demands in dynamic operational environments.
Engineered to withstand high winds, extreme cold, and heavy snow loads.
The CLAM shelter is purpose-built for Arctic and sub-Arctic deployments, providing exceptional resistance to high winds, sub-zero temperatures, and significant snow accumulation. It has been operationally validated in extreme environments, including long-range over-snow traverses and sustained field deployments. This proven performance ensures military units can rely on CLAM to deliver protection, survivability, and operational continuity in the most unforgiving climates.
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