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Scuba News
July 19, 2025 by HAL
SMB stands for surface marker buoy. It shows divers’ locations to surface support. SMBs are usually yellow and towed while diving. DSMB stands for delayed surface marker buoy. It signals when divers start to ascend after a dive. DSMBs can be used to alert support teams if there’s a problem. Both SMBs and DSMBs are […]
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