2.Napier's rules apply to:
3.The haversine formula is preferred over the plain cosine formula because it:
4.On total loss of GNSS, the navigator's immediate fallback is:
5.Latitude can be obtained in an emergency with only a sextant and watch by:
6.Composite great-circle sailing is used to:
7.A vessel makes 12 knots. Using the three-minute rule, distance run in three minutes is:
8.Steering 090° for 60 NM in latitude 60°N, the change of longitude is about:
9.Great-circle distance between two points is found with:
10.A stated accuracy of '10 m at 95%' corresponds roughly to:
11.The four stages of passage planning in IMO guidance are:
12.Two independent error sources of 3 m and 4 m combine to about:
13.One nautical mile equals:
14.Repeatedly averaging sights will reduce:
15.At 18 knots, how far does the vessel run in 20 minutes?
