Safety · Destination Guide
Cold-water wrecks, cathedral caves and clear North Atlantic light
Shetland combines cold water, exposed Atlantic weather, tide-sensitive channels, busy harbor areas and remote medical logistics. Use a specialist skipper, keep site choices flexible and plan the emergency pathway before the first dive. Conservation is equally operational: historic wrecks, military remains, seabird cliffs and marine mammals all carry legal or ethical obligations. Look, photograph and leave in place.
Match the site to wind, swell, tide, traffic and the least experienced qualified diver. Use conservative gas reserves and carry a DSMB with spool. Cold can reduce dexterity and judgment before a diver notices shivering, so shorten run times and monitor teammates after surfacing. Treat every cave as an overhead decision: keep a clear exit, carry suitable lights and never cross the limit of training.
Stop diving, administer the highest practical concentration of oxygen, begin basic life support if needed and call 999 or 112 for the Coastguard or ambulance service. Give the exact position, dive profile, breathing gases, symptom timeline and oxygen remaining. The British Hyperbaric Association's Scotland diving-incident number is 0345 408 6008, but emergency services should coordinate transport rather than the group attempting an unplanned chamber transfer.
Gilbert Bain Hospital in Lerwick is Shetland's remote and rural hospital for emergency and acute care. Its switchboard is 01595 743000. Call 999 or 112 for a serious or time-critical problem, and use NHS 24 on 111 for urgent advice that is not immediately life-threatening.
No public recompression chamber was identified in Shetland in the reviewed official sources. A diving casualty may need stabilization locally and transfer by sea or air to a chamber selected by the receiving medical and hyperbaric teams. This makes adequate boat oxygen, clear evacuation insurance and conservative post-dive flight or ferry planning especially important. Do not fly with possible decompression symptoms unless directed by the treating specialists.
Cold-water exposure
Late-summer water is only about 13°C to 14°C, and midwinter can reach 5°C to 6°C. Drysuit leaks, weak gloves and long runtimes can become operational problems quickly.
Rapid wind, swell and visibility changes
A bright forecast does not lock in a site. Expect the skipper to substitute a sheltered wreck or geology dive when the exposed route is unsafe.
Tide and channel current
Sounds, harbor approaches and beach exits can move quickly. Use local tide planning, carry a DSMB and do not infer current from the shoreline alone.
Harbor traffic and dive notification
Diving operations inside Shetland Islands Council port and harbor areas require notice and approval. An exclusion zone can require at least 7 days' notice.
The Kennemerland, Wrangles Palais and Queen of Sweden are Shetland Historic Marine Protected Areas. Current council guidance encourages diving but forbids removal from the seabed. Other sites can be protected under the Protection of Wrecks Act or Protection of Military Remains Act. Military aircraft are automatically protected, and a controlled military site cannot be dived without authority. Report any recovered wreck material to the Receiver of Wreck.
Follow the Scottish Marine Wildlife Watching Code from boat and shore. Let seals and cetaceans control the encounter, never pursue or block them, and avoid haul-outs, pups and resting animals. Keep clear of nesting birds, remain on paths at reserves, secure loose line and plastic, and do not anchor on archaeology or fragile reef growth. Use the charter's shot or approved mooring system and maintain trim over dead men's fingers and anemone-covered rock.
Do Not Do This
Avoid entering when cold-water exposure. Confirm local briefings before committing.
| Contact | Role | Phone | Availability |
|---|---|---|---|
| United Kingdom emergency services | Police, ambulance, fire or Coastguard dispatch | 999 or 112 | 24/7 |
| HM Coastguard marine distress | Marine distress and urgency calling | VHF Channel 16 | 24/7 |
| Shetland Coastguard | Local weather advisory and radio-cover contact listed by Visit Shetland; use 999 or 112 for emergencies | +44 1595 692976 | Confirm current operating details before the trip |
| NHS 24 | Urgent medical advice in Scotland when the situation is not immediately life-threatening | 111 | 24/7 |
| Gilbert Bain Hospital | Remote and rural emergency and acute-care hospital in Lerwick | +44 1595 743000 | Hospital switchboard 24/7 |
| British Hyperbaric Association - Scotland | Diving-incident hyperbaric advice and referral coordination | 0345 408 6008 | Emergency line |