Lesson 1 TIME, PLACE, AND DIRECTION AT SEA
Introduction What is emergency
navigation? Scope of this course Preparation for navigational emergencies Latitude regions and seasons defined Time in navigation Finding position vs keeping track of position Choosing a route Compass checks Steering without a compass
Lesson 2 STEERING BY WIND AND SWELLS
Reading the wind Swells, waves, and ripples Wind shifts
Lesson 3 STEERING BY THE STARS
Being an explanation of the concept of steering "by the shape of the whole sky" Or whatever part is showing Using key ideas such as leading stars and trailing stars Circumpolar stars And numerous tricks for learning "the shape" Including special star groups Overhead stars Half-latitude rule The tropics rule Polynesian star paths Circumpolar star paths Timing low stars and more
Lesson 4 STEERING BY THE SUN
Sunrise and sunset Morning sun and afternoon sun Local Apparent Noon Solar time method The shadow-tip method The tropics rule for the sun Sun crossing due east or due west Sun compasses
Lesson 5 STEERING BY OTHER THINGS IN THE SKY
The moon The planets Clouds, birds, and planes
Lesson 6 STEERING IN FOG OR OVERCAST SKIES
How to make a magnetic compass Direction finding with a portable radio Streaming a line along the centerline
Lesson 7 CURRENTS AND DEAD RECKONING
Ocean currents Tidal currents Wind-driven
currents Coastal currents Finding boat speed DR errors from speed and direction DR errors from currents and leeway Progress to weather
Lesson 8 LATITUDE AND LONGITUDE AT SEA
Makeshift altitude measurements and calibrations
Makeshift altitude corrections Latitude by Polaris Latitude from zenith stars Latitude from horizon-grazing stars Latitude from double transits of circumpolar stars Latitude from the sun at LAN Latitude from the length of day Keeping track of latitude Longitude from sunrise or sunset Longitude from LAN (the equation of time) Finding GMT from a known position Keeping track of longitude
Lesson 9 COASTAL PILOTING WITHOUT INSTRUMENTS
Signs of land at sea Visible range of lights and land Finding distance off Running fix from radio bearings Course made good in current
Lesson 10 WHAT TO DO WITH WHAT YOU'VE GOT--A
SUMMARY
Routine
navigation with everything Position by radio contact Everything but
GMT Everything but a sextant Everything but sight reduction tables
Everything but a compass Everything but an almanac Nothing but
GMT
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