Divers with a safety line under an ice hole, PADI Ice Diver course

Closed ceiling, open mind.

PADI Ice Diver: ice diving as a team

Diver under the ice sheet above a lake bottom, PADI Ice Diver course

Course description

Ice diving is the first environment in which a recreational diver has no direct access to the surface. The only way out leads through the ice hole, and a safety line keeps you connected to it. The PADI Ice Diver course teaches how to plan, organise and carry out such a dive in a team where everyone, including the people on the ice, has a clearly defined role.

The programme covers preparing the dive site and the ice hole, working on a safety line, the line signal system, the duties of the tender and the standby diver, and emergency procedures: loss of contact with the line, a frozen regulator, chilling. We spend a lot of time on land and on the ice, because the safety of this dive starts before you enter the water.

There is no room under the ice for unstable buoyancy. Hitting the ice from below, stirring up silt or a fast ascent with a frozen regulator are real hazards. That is why we require reliable buoyancy and trim in a dry suit (the PADI Dry Suit Diver course is good preparation), and we set up the equipment configuration for cold water: two independent regulators, stowed hoses, nothing that can snag on the line.

Polish winters, though increasingly unpredictable, still allow diving under ice in lakes and quarries. This is a course for divers who dive all year round, and an important step towards diving in enclosed environments: the procedures for working with a line, team discipline and thinking about the way out are the same in caves and on wrecks.

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Ice hole seen from underwater, PADI Ice Diver course
Key information

Usually 2 training days: theory and preparation on land, plus three dives under ice. The date depends on ice conditions, so we set the final date shortly before the course.

3 dives under ice. Each dive is preceded by preparing the site and the ice hole, and students also take part as a tender on the ice.

We plan the training dives shallow and a short distance from the ice hole. We limit depth and time because of the water temperature, the risk of a regulator freezing and the fact that you can surface in only one place.

A maximum of 4 students per instructor. For diving under ice we work as a team supported by assistants and a standby diver ready to enter the water.

Air, or nitrox for those with PADI nitrox certification. More important than the mixture is dry gas and a regulator suited to cold water; we keep cylinders warm until assembly.

Skills after the course:

  • planning and organising a dive under ice as a team,
  • marking out and preparing the ice hole and the site on the ice,
  • working on a safety line and the line signal system,
  • acting as a tender and as a standby diver,
  • configuring cold water equipment with two independent regulators,
  • handling a frozen regulator and loss of contact with the line,
  • preventing chilling before, during and after a dive.

  • minimum age: 18 years,
  • PADI Advanced Open Water Diver certification or an equivalent from another organisation,
  • good health and a current doctor’s certificate; diving in very cold water puts a real strain on the body,
  • experience in a dry suit (PADI Dry Suit Diver recommended) and cold water dives before the course.

Specialist equipment

  • a dry suit with an undergarment suited to water close to 0°C,
  • a cylinder with a dual outlet valve (H or Y) and two independent regulators suited to cold water,
  • a harness for attaching the safety line,
  • dry gloves or thick neoprene gloves, a hood,
  • a main torch and a backup torch.

Standard set

  • a wing or jacket, weights,
  • a dive computer,
  • mask, fins, a knife or shears,
  • warm clothing and drinks for the breaks on the ice.

Long Deco provides the safety line, the equipment for cutting ice holes and the fittings of the station on the ice. Personal equipment can be rented, but your dry suit and gloves should be tested in cold water beforehand.

Training fee

The price is set individually, depending on the location, conditions and number of people.

Registration and certification fee

Registration and certification according to the current PADI price list.

Additional costs

Equipment rental, gases, entry to the water body and permits for diving under ice, travel, any accommodation.

Light coming through an ice hole onto a diver under the ice, PADI Ice Diver course

Theory

The theory is mostly about organisation. Diving under ice is safe when the team on the ice works as well as the diver under water.

  • assessing the ice: thickness, types of ice, load capacity, weather conditions,
  • preparing the ice hole and the station on the ice,
  • team roles: diver, tender, standby diver, dive supervisor,
  • the safety line, how to attach it and the signal system,
  • cold water equipment and the causes of regulator freezing,
  • cold physiology: chilling, frostbite, recovery between dives,
  • emergency procedures: losing the line, a frozen regulator, a diver in distress.

Practice

Each day starts on the ice: assessing conditions, cutting the ice hole, preparing the lines and the station. Students take turns diving and tending.

  • preparing the ice hole and marking the dive site,
  • checking equipment and putting on a harness with the safety line,
  • descending under the ice and controlling buoyancy just below the ice surface,
  • communicating with the tender by line signals,
  • simulating loss of contact with the line and the procedure for finding it,
  • shutting off the flow from a frozen regulator and switching to the second one,
  • working as a tender and as a standby diver on the surface.

Do not breathe from the regulator or press the inflator button before entering the water in freezing weather. A wet, chilled regulator mechanism is the most common reason for it freezing in the first minutes of a dive.

Diver in gloves just under the ice, PADI Ice Diver course
Frequently asked questions

FAQ

It is a specialty that prepares you to plan and run dives under ice. It teaches working on a safety line, organising the team on the ice and emergency procedures in an environment with no direct access to the surface.

It is demanding, more in organisation and physical effort than in technique. The cold, heavy equipment and long preparations on the ice take patience, and under water you need reliable buoyancy in a dry suit.

The course includes 3 dives under ice. On top of that comes time on the ice, where students act as tender and learn to run the station.

It is not required, a dry suit can be rented. You do have to dive in it comfortably, though, so before the course we recommend PADI Dry Suit Diver and a few dives in cold water.

Staying thermally comfortable through the whole day and staying calm in an enclosed environment. Under water the challenge is controlling buoyancy close to the ice and working with the line without tangling it.

Yes, if there are ice conditions at the destination, for example in Scandinavia or in the mountains. In Poland we run the course on frozen lakes and quarries when the thickness of the ice allows it.

The course takes place only when the ice is a safe thickness, so in mild winters the date may be moved or we shift the course to a trip. The theory and equipment preparation can be done earlier.

No, the PADI Ice Diver course is a recreational specialty. It does have a lot in common with diving in enclosed environments, though: a single way out, work with a line, equipment redundancy and team discipline.
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