H-6 class Submersible
|H-6 class Submersible|
The vessel is usually equipped with a snorkel system either a short snorkel for use at shallow depth but not usable in ice, or a longer snorkel that is only usable when stationary, but capable of deploying through ice-cover. (Only one of these two is fitted at any one time). Diving depth is limited to 600m.