The Halcyon Closed 3.3 SMB is a closed circuit 1m long alert marker in orange. The SMB does not have an open bottom and is designed to be inflated by using an inflator hose through the fitted one-way valve connector.

The SMB has an integrated pressure-relief valve, allowing them to be deployed from depth. When deflated it fits in a pocket or backplate Halcyon MC Storage Pak.

Halcyon SMB provides maximum visibility and redundant flotation to support diving safety and peace of mind.

Please note: Due to its dimensions, we do not recommend the 3.3′ SMB as a primary SMB for boat or shore diving in the UK. Halcyon’s primary SMBs that are acceptable to most UK dive skippers include:

• Halcyon Closed Alert Market 6′ SMB
• Halcyon 6′ SLIM Closed Alert Marker SMB
• Halcyon Closed Alert Marker 4.5′ SMB

Halcyon Closed 3.3 SMB Key Features

• 200 denier nylon
• Lift capacity 2.7kg
• Length: 3.3 (1m)
• Integrated OPV allowing safe deployment from depth
• Halcyon’s No-Lock connector for easy inflation
• Easily inflated at depth
• When deflated, fits in a pocket or backplate MC Storage Pak
• Marked with Coast Guard approved SOLAS reflective tape
• Lifetime Warranty on RF-welded seams

Whats the best SMB?

This is a question we often receive in-store, where its easy to showcase and demonstrate the various types of SMBs alongside the numerous reels we have in stock.

However, with so many listed online, its not always straightforward to determine which SMB will best meet your needs.

While we recognise that everyone has their unique configurations and requirements,This Articleaims to assist you in making your decision.

Halcyon SMB Maintenance