Sea Power - Submarines

What U.S. submarine, in 1958, became the first vessel to cross the North Pole beneath the polar ice cap?

• USS Nautilus
• USS Thresher
• USS Holland
• USS Albacore
• USS Norfolk

Which one of the following has never been a class of submarine in the British Royal Navy?

• Amphion class
• Bluefin class
• Porpoise class
• Explorer class
• Swordfish class

Submarines in the Swedish Navy are generally named after what?

• Cross-Country Skiing Champions
• Swedish Monarchs
• Swedish Military Commanders
• Nobel Prize Winners
• Swedish Provinces