| 1 | Speed measured in nautical miles per hour is referred to as knots . | |
| 2 | Now, coast guard vessels enforce a fishing ban within the lagoon and within a 12-nautical-mile radius around the atoll. | |
| 3 | A ship carrying 20,000 tonnes of liquefied petroleum gas caught fire about 20 nautical miles east of Hong Kong waters. | |
| 4 | Maximum tidal currents generally range from 0.5 to 1.5 knots and locally up to 5 knots at narrow channels. | |
| 5 | The Athenian trireme was about 120 ft (37 m) long, and was rowed by 170 oarsmen seated in three tiers along each side; |
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