Halcyon Super Big Closed-Circuit DAM (1.8m / 52lb Lift)

Maximum Visibility. Reliable Surface Support.

The Halcyon Super Big Closed-Circuit DAM (Diver Alert Marker) is engineered for technical divers who require maximum surface visibility and functional lifting capability. Standing an impressive 1.8 meters (6 ft) tall, this marker sits high and proud above the waves, ensuring boat crews and support teams can spot you effortlessly in rough seas. With 23.6 kg (52 lbs) of lift capacity, it also serves as a highly reliable tool for light-duty recovery and underwater support operations.

Rugged, Closed-Circuit Design

Constructed from highly durable 200-denier nylon with radio frequency-welded seams, the Super Big DAM is built to withstand harsh marine environments. The closed-circuit design features Halcyon's proprietary No-Lock® connector, allowing for rapid inflation at depth via a low-pressure (LP) hose or oral inflation. An integrated over-pressure relief valve (OPV) ensures safety and precise control as expanding air vents automatically during ascent. For ultimate surface safety, the top of the marker is banded with US Coast Guard-approved SOLAS reflective tape.

⚙️ Technical Specifications

• Dimensions & Lift: 1.8 m (6 ft) tall with 23.6 kg (52 lb) of lift capacity.
• Material Construction: Durable 200-denier nylon with radio frequency-welded seams.
• Visibility: Highly visible profile, marked with Coast Guard-approved SOLAS reflective tape. (Available in multiple colors to allow divers to color-code position marking vs. emergency signaling).
• Inflation System: Closed-circuit design featuring the Halcyon No-Lock® connector for easy oral or LP hose inflation.
• Safety & Control: Integrated over-pressure relief valve (OPV) allows safe deployment from depth.
• Storage: Highly compact when deflated; easily stows inside a standard Halcyon thigh pocket or backplate MC Storage Pak.