According to the 1 minute rule, the distance traveled in 1 minute at 100 knots is expressed in which unit?

Master the Navigation, Seamanship, and Shiphandling (NSS) – Officer of the Deck (OOD) Phase 2 Exam with engaging flashcards and multiple choice questions, complete with hints and explanations. Prepare comprehensively for your test!

Multiple Choice

According to the 1 minute rule, the distance traveled in 1 minute at 100 knots is expressed in which unit?

The main idea is converting speed and time into a practical distance unit for quick planning. Speed in knots means nautical miles per hour, so in one minute the distance covered is speed times time in hours: 100 knots × (1/60 hour) = 100/60 NM ≈ 1.6667 NM. To get a traditional shiphandling figure you translate that into feet, since 1 nautical mile is about 6,076 feet. So 1.6667 NM × 6,076 ft/NM ≈ 10,100 ft, commonly remembered as about 10,000 feet. That’s why the 1-minute rule uses feet as the unit. If you instead used nautical miles or meters, you’d get roughly 1.67 NM or about 3,100 meters, but the familiar takeaway for the rule is about 10,000 feet.

The main idea is converting speed and time into a practical distance unit for quick planning. Speed in knots means nautical miles per hour, so in one minute the distance covered is speed times time in hours: 100 knots × (1/60 hour) = 100/60 NM ≈ 1.6667 NM. To get a traditional shiphandling figure you translate that into feet, since 1 nautical mile is about 6,076 feet. So 1.6667 NM × 6,076 ft/NM ≈ 10,100 ft, commonly remembered as about 10,000 feet. That’s why the 1-minute rule uses feet as the unit. If you instead used nautical miles or meters, you’d get roughly 1.67 NM or about 3,100 meters, but the familiar takeaway for the rule is about 10,000 feet.

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