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Closed dSMB 90cm

Regular price £42.95 £42.95 Sale SKU: 59349

Rated 3.0 out of 5
1 Review

xDeep Closed dSMB 90cm
xDeep Closed dSMB 90cm xDeep Closed dSMB 90cm xDeep Closed dSMB 90cm

Closed dSMB 90cm

Regular price £42.95 £42.95 Sale SKU: 59349

Rated 3.0 out of 5
1 Review

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Closed dSMB 90cm

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Closed dSMB 90cm

Regular price £42.95 £42.95 Sale In Stock

Brand: XDEEP

Model: Closed dSMB 90cm

SKU: 59349

The xDeep Closed dSMB 90cm is a compact closed cell delayed surface marker buoy to mark a location in the water. Bright orange colour and reflective tape increase the visibility of the SMB and the closed design ensure it stays inflated on the surface.



The dSMB can be inflated easily orally or with a LPI hose and the over pressure vavle allows expanding air to escape to prevent damage.

The top of the SMB has a clear pocket for notes that can be sent to the surface to communicate with surface cover.

Webbing loop at the base of the SMB aids easy reel attachment and a bungee loop holds the dSMB wrapped up when not in use.


  • Closed Cell
  • Over Pressure Valve
  • Reflective Tape
  • Message Pocket
  • LPI Inflation

XDEEP Closed dSMB 90cm - Features

FeatureProduct Specification
dSMBs are usually either Closed Cells, Fluted or Open bottomed. Closed Cell buoys are sealed all the way round and can only be inflated orally or with a LPI. Closed cell buoys can only deflate when you pull on the dump valve so they stay inflated. Fluted buoys have an open bottom with a bottle-neck valve that closes itself when the buoy is fully inflated. The open bottom means that you can inflate with an octo or exhaust from your primary but if they don't fully inflate there is a chance that some gas can leak out if you don't keep the line taught. Open bottom buoys just have an open end, usually with weighted panels. Air is free to flow in and out so keep a tight line so the buoy doesn't tip over and empty.Close
Buoy Type
Surface marker buoys come in a variety of types for different uses. SMBs are location marker buoys that are inflated at the beginning of a dive and either towed behind a diver or tied off to an anchor point to let boats in the area know that there is a diver nearby. dSMBs are Delayed Surface Marker Buoys that you take with you on a dive deflated. when you are about to ascend you tie it onto a reel or spool and inflate so it shoots to the surface while you hold onto the reel. Many dive sites and boats require divers to have a dSMB on them on all dives for safety. Lift Bags are specially designed buoys that can be tied onto an object and inflated to lift it to the surface for recovery. Lift Bags are usually high volume buoys and will have a buoyancy rating based on their volume so you choose the right size buoy based on what you are trying to lift.Close
Length (cm)
The overall length of the SMB when inflated so you have a better idea of how tall it will stand out of the water. Close
LPI Inflation
Most dSMBs come fitted with a Low Pressure Inflation nozzle, similar to the fitting on your BCD or Drysuit. Simply push the quick disconnect hose from your BCD or Drysuit onto the fitting and the spring loaded mechanism will inflate the dSMB very quickly. The BCD hose does not attach to the dSMB so when it is full it just slides off. Some divers also use these valves to orally inflate the dSMB so their buoyancy doesn't change and they don't have to disconnect and reconnect any hoses in the water.Close
Message Pouch
At the top of some dSMBs you will find a clear pouch that you can roll up messages inside to communicate with the surface and send messages so they can prepare equipment or send help without you needing to surface. These clear pouches can also be used to fit glow sticks or other lights so you can be better seen in dark environments.Close
Oral Inflation
Similar to the LPI Inflation, some dSMBs can be inflated by blowing into them but these valves have dedicated fittings that are more comfortable and have lighter spring valves to blow against. These cannot however be inflated with a LPI hose.Close
At the top of SMBs you can often find reflective tape like SOLAS that makes the SMB easier to spot on the surface.Close
dSMBs are either Single or Double seamed. Single seamed are a single piece of material folded over and stiched down one side but repetetive use can wear the folded section of material. Double seamed are made from a pair of sections welded and stitched all the way round the edges.Close

We offer free tracked UK standard delivery on orders over £50.

Standard UK delivery is £3.95 for orders under £50. You will receive your order 2 - 4 days from the date of despatch. Order by 3pm on a working weekday and we will aim to despatch the same day.

Next Working Day for the UK is £6.95.

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We hope you will be completely satisfied with any product purchased from Simply Scuba.

However, you can return it for any reason within 28 days from the date of despatch for a full refund (less postage costs).

Royal Mail tracked return option within the UK for your convenience.

Learn more about returns
average rating 3.0 out of 5
Based on 1 review
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1 Review
Rated 3 out of 5
Review posted

Nice compact DSMB

Nice compact DSMB, although it is quite difficult to orally inflate.

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