Kayak diving

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Kayak diving is a type of recreational diving where the divers paddle to a diving site in a kayak carrying all their gear to the place they want to dive.

The range can be up to several kilometres along the coastline from the launching point to a place where access would be difficult from the shore, although the sea is sheltered. It is a considerably cheaper alternative to using a powered boat, as well as combining the experience of sea kayaking at the same time.

On reaching a dive site the lead kayak drops an anchor, and the other kayaks tie on to the back or use separate anchors. The divers put air into the buoyancy compensator attached to their diving cylinders and then push them overboard so they float while remaining tethered to the kayak by a bungee cord. Then they put on their weight belts, slide overboard, and climb into their jackets while floating. In places where the visibility is less than excellent it is important use a diving reel to find the way back to the anchor, because usually there is no boat handler on the surface to pick up the parties if they surface elsewhere. Alternatively one of the party can carry the anchor on the dive.

Getting into the kayak is the reverse of getting off. Since the kayaks are stable and open, it is easy to climb onto them from the side.

It is important to fly an A-flag while diving to indicate that there are divers underwater and traffic on the surface should take care to avoid them.

In the UK, with its low water temperatures, strong tidal currents and bad weather, an empty boat at sea is likely to be reported to HM Coastguard by experienced and responsible seafarers as a sign of a possible life-threatening emergency. As it is the Coastguard's duty to investigate such reports, they may order a search of the area by an RNLI lifeboat or Coastguard helicopter. To reach a minimum level of safety when boat diving, a capable person should be left on the surface at the dive site while divers are underwater, to start a rescue and operate a marine VHF radio to raise the alarm in the event of a diving accident.