Halcyon Big Diver's Alert Marker, 4.5' (1.4 m) Long, Closed Circuit, Yellow
In stock — ships from Irvine, CA
This item is currently on backorder. Order now to reserve yours, and we will ship it as soon as it is back in stock.
Halcyon Big Diver's Alert Marker, 4.5' (1.4 m) Long, Closed Circuit, Yellow is backordered and will ship as soon as it is back in stock.
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Product Information
The Halcyon Big Diver's Alert Marker, 4.5' (1.4 m) Long, Closed Circuit, Yellow is a closed-circuit surface marker buoy that stands 1.4 m (4.5 ft) tall and provides 18 kg (40 lb) of redundant lift, making it a signaling and emergency-use tool for recreational and technical divers. An integrated over-pressure relief valve lets it be deployed and inflated from depth, and it is marked with Coast Guard-approved SOLAS reflective tape for visibility in low light.
Who it is for
It suits divers who need to be seen from a distance at the surface: decompression divers hanging on a line, drift and boat divers marking their position for pickup, and instructors or team leaders who want a tall, high-visibility marker on every dive. Because it carries 18 kg (40 lb) of lift, it also serves as a source of redundant lift in an emergency. Halcyon offers the Big DAM in yellow, shocking pink, or orange, so many divers carry one color for routine position marking and a second color reserved for emergencies. This listing is the high-visibility yellow version, SKU 14.031.040.
Key details
- 1.4 m (4.5 ft) inflated height, 18 kg (40 lb) lift capacity
- Integrated over-pressure relief valve (bottom dump) so it can be inflated and released from depth
- No-Lock® connector for oral inflation or connection to a low-pressure inflator hose
- Coast Guard-approved SOLAS reflective tape
- Abrasion-resistant coated fabric with an inflatable bladder, approximately 0.7 lb
- Reinforced webbing attachment loop that accepts reels and spools
Compatibility and sizing
The No-Lock® connector accepts a low-pressure (LP) inflator hose or oral inflation. When deflated, the marker rolls down to fit in a Halcyon thigh pocket or a Halcyon backplate MC Storage Pak, or it can be stowed on a harness or in a gear bag.
DiveCatalog.com is an authorized Halcyon dealer and a dive shop in Irvine, California since 2003. Call 888-701-4017 or start a chat if you have questions about inflation hose fit, pocket storage, or choosing a color for your team.
- 1.4 m (4.5 ft) tall closed-circuit diver's alert marker for clear identification at the surface.
- 18 kg (40 lb) lift provides redundant lift for surface signaling and emergency use.
- Integrated over-pressure relief valve (bottom dump) allows safe deployment and inflation from depth.
- No-Lock® connector lets you inflate orally or connect a low-pressure inflator hose.
- SOLAS reflective tape that is Coast Guard-approved improves detection in daytime and low light.
- Packs small and, when deflated, fits in a Halcyon thigh pocket or backplate MC Storage Pak.
- Abrasion-resistant coated fabric with an inflatable bladder for durability in gear bags and pockets.
- Reinforced webbing attachment loop compatible with reels and spools for secure deployment.
- High-visibility yellow finish with reflective band; Halcyon also publishes shocking pink and orange.
- Light to carry at approximately 0.7 lb, so it can ride on every dive.
| Model | Big Closed-Circuit Diver's Alert Marker (DAM) |
| Height | 1.4 m / 4.5 ft (55.1 in / 140 cm) |
| Lift Capacity | 18 kg / 40 lb |
| Circuit Type | Closed circuit |
| Valve | Integrated over-pressure relief valve (bottom dump), allows deployment and inflation from depth |
| Inflation Connector | No-Lock® connector for oral inflation or LP hose connection |
| Reflective Marking | Coast Guard-approved SOLAS reflective tape |
| Material | Abrasion-resistant coated fabric with inflatable bladder |
| Attachment Points | Reinforced webbing loop compatible with reels and spools |
| Color (this listing) | High-visibility yellow with reflective band |
| Colors Offered | Yellow, shocking pink, orange |
| Packed Size | Rolls compact; fits a Halcyon thigh pocket or backplate MC Storage Pak |
| Weight | 0.7 lb (approx.) |
| Intended Use | Surface marker buoy and diver's alert marker for scuba and technical diving |
| SKU | 14.031.040 |
⚠️ WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
Frequently Asked Questions
Can the Halcyon Big Closed-Circuit DAM be deployed from depth?
Yes. The Big Closed-Circuit Diver's Alert Marker uses an integrated over-pressure relief valve, a bottom dump that vents expanding gas as the marker rises, so it can be safely deployed and inflated from depth. That makes it practical to send up before or during a decompression stop rather than only at the surface.
How do you inflate this diver's alert marker?
It inflates through a No-Lock® connector, which accepts either oral inflation or a low-pressure (LP) inflator hose. With 18 kg (40 lb) of lift and a 1.4 m (4.5 ft) height, you can fill it from your LP hose for a fast deployment or top it off orally at the surface. The over-pressure relief valve handles gas expansion on ascent.
What colors does the Halcyon Big DAM come in?
Halcyon publishes the Big Alert Marker in yellow, shocking pink, and orange. Many divers carry two colors and assign one to routine position marking and the other to emergencies, so the team can tell at a glance what the marker means. This particular listing is the high-visibility yellow version, SKU 14.031.040.
How does it store when deflated?
When deflated, the marker rolls down small enough to fit in a Halcyon thigh pocket or a Halcyon backplate MC Storage Pak. It weighs approximately 0.7 lb, so it can also be stowed on a harness or in a gear bag without adding meaningful bulk to your kit for everyday recreational or technical dives.
