HALCYON BIG CLOSED-CIRCUIT DAM – DIVER ALERT MARKER & LIFT BAG

High-Visibility Surface Marker with Redundant Buoyancy
The Halcyon Big Closed-Circuit DAM is essential safety equipment, providing reliable flotation and excellent visibility during open-water ascents or surface signaling. With 18 kg / 40 lb of redundant lift, it supports diver safety in emergency situations.

Standing 1.4 m / 4.5 ft tall, this closed-circuit surface marker remains upright and highly visible, even in challenging conditions. A built-in over-pressure valve and bottom dump allow for controlled deployment and venting at the surface.

Trusted Halcyon Design
Whether separated from your team or signaling a surface vessel, this DAM ensures you are seen and supported. Trusted by both technical and recreational divers, it reflects Halcyon’s proven durability and thoughtful engineering.

Specifications:

• Height: 1.4 m / 4.5 ft

• Lift: 18 kg / 40 lb

• Easily inflated at depth

• Integrated over-pressure relief valve

• Bottom dump for surface venting

• Fits Halcyon thigh pocket or backplate MC Storage Pak

• Coast Guard-approved SOLAS reflective tape

• No-Lock® connector for oral inflate or LP hose connection

• Available colours: Yellow, Orange, Hot Pink