If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
Your mission is to rescue 118 russian marines from the sunken submarine "KYPCK" using the LR 5 mini sub. The LR 5 can carry up to 40 men but it has oxygen for one minute only. "KYPCK" lies about 146 meter deep latitude and longitude have been used to "0" as your target.
Arrow keys- To navigate.
Space bar- To go deeper.