Q1. A.60 days and 21 hours
Q2. B. USS Triton
Q3. A. Captain Edward L. Beach Jr.
Q4. B. Jules Verne

[Image from Wikipedia]
Operation Sandblast, as this first-ever submerged circumnavigation of the globe was named, was accomplished by the United States Navy’s nuclear-powered submarine, USS Triton (SSRN-586), in 1960.

First Submerged Circumnavigation
Led by Captain Edward L. Beach Jr., the Triton departed New London, Connecticut on 16 February 1960 to head to the start /finish line for the journey—the St. Peter and Paul Rocks in the middle of the Atlantic Ocean, near the Equator.
Details of the Voyage
- Dates: February 24 to April 25, 1960
- Duration: 60 days and 21 hours
- Distance travelled: 26,723 nautical miles* (49,491 km; 30,752 miles)
- Average speed: 18 knots (33 km/h; 21 mph)
The Triton crossed the equator four times and notably, Triton’s overall navigational track during Operation Sandblast was similar to that of the historic Spanish expedition that successfully completed the first circumnavigation of the world.
Historic First Circumnavigation
In 1519, Portuguese explorer Ferdinand Magellan started an epic journey that took his expedition all the way around the world; Spanish explorer Juan Sebastián Elcano finished it in 1522. Of the 270 men and five ships that set sail, only about 40 men and one ship made it back. Magellan died in battle in the Philippines in April 1521.

[Image from Wikipedia]
*Ten Thousand Leagues Under the Sea
The title is a poetic licence as the actual distance travelled converts to 10,251 leagues. This conversion from 26,723 nautical miles to leagues was carried out at metric-conversions.org.
