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This quiz consists of 5 multiple choice and 5 short answer questions through Horenburg's Knife.

Multiple Choice Questions

1. During one month in 1940, how many ships were sunk by U-boats?
(a) 75.
(b) 48.
(c) 66.
(d) 57.

2. Where was the sunken U-boat U-853 located?
(a) Connecticut.
(b) New Jersey.
(c) Massachusetts.
(d) Rhode Island.

3. Between 1939 and 1945, how many U-boats did the Germans have?
(a) 817.
(b) 984.
(c) 1,167.
(d) 1, 245.

4. How many people died when the "Andrea Doria" collided with the "Stockholm"?
(a) 83.
(b) 79.
(c) 51.
(d) 112.

5. How long was Nagle's boat?
(a) 65 feet.
(b) 85 feet.
(c) 75 feet.
(d) 55 feet.

Short Answer Questions

1. In the 1970s and 1980s, how deep would Nagle and other kings of the sport descend when diving?

2. How old was Nagle when he became a legend in shipwreck diving?

3. In the water of the Atlantic, how poor might visibility have been?

4. In the 1970s and 1980s, what was the recreational limit suggested by most scuba training organizations?

5. How warm would the temperature have gotten on a U-boat in the diesel room?

(see the answer key)

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