Men prepare submarine in Camden, New Jersey, for Arctic voyage

The video tutorial discusses a submarine's capabilities beneath the polar ice cap. It highlights the submarine's speed of 10.5 knots and a cruising range of 3654 miles. The design features include a superstructure and a sled deck that protects the conning tower and serves as runners.

What is the significance of the sled mentioned in relation to the superstructure?

What does the term 'service lead' refer to in the context of the text?