The Bailiwick's Hyperbaric Chamber will be closed for two days this week meaning divers are asked to be "extremely careful" if they must go out during that time.
The Chamber will be closed on Wednesday 11 and Thursday 12 for a regular service maintenance.
Anyone needing treatment for decompression illness during that time may have to go elsewhere.
Pictured: Divers from Jersey and the other Channel Islands can also use Guernsey's hyperbaric chamber.
The Hyperbaric chamber is at Guernsey's hospital, in the Emergency Department and it is available to all divers "intending to dive within Guernsey’s 12-mile limit".
All dive clubs have been told ahead of schedule about the planned closure this coming week, along with harbour authorities across the Bailiwick and in Jersey, as well as Jersey's Emergency Department.
With the closure being planned ahead of time, all commercial and leisure divers are asked to be "extremely careful during the time the chamber is closed and only dive if it is absolutely necessary".
Any diver suspected of suffering from decompression illness on 11 and 12 October will be initially treated within the Emergency Departments in either Guernsey or Jersey and if they need to use a hyperbaric chamber they'll be transported to a suitable treatment centre elsewhere.
'At long last!' new hyperbaric chamber for Guernsey
Hyperbaric chamber opens today
Hyperbaric chamber likely to open early 2019
Comments
Comments on this story express the views of the commentator only, not Bailiwick Publishing. We are unable to guarantee the accuracy of any of those comments.