What is the launching altitude for a MK31 MOD1 torpedo is ?

• A. 0-50 ft
• B. 100-450 ft
• C. 50-100 ft
• D. 500-1000 ft

Answer: (B)

The key idea is understanding how high above the water the torpedo is released and how that height affects water entry and arming. For the MK31 MOD1, releasing from a height in the mid-range—about 100 to 450 feet above the water—provides the best balance. It gives the torpedo enough time in air to orient and stabilize and to complete its arming sequence, while still allowing a strong, proper water-entry velocity. Releasing too low (0–50 ft or 50–100 ft) would produce a harsher water impact and can compromise stabilization and safety, whereas releasing too high (500–1000 ft) could degrade water-entry speed and accuracy and disrupt timing. Thus, 100–450 ft is the most appropriate launching altitude window.