Plane Sailing Example 2
Home
Flashing Light
Watch Training Workbook
Campus Life
The Joe Show
Deck Skills
Cruise
Navigation
Celestial Nav.
Radar
Meteorology
Ship Structure
Stability
GMDSS
Rules of the Road
Marlinespike
Ship and Cargo Ops.
Shipping Info
FAQs
Shanties and Sea Lore
Terms/Acronyms
World Port/Drink Guide
Forum

To Solve for Final Position:
If given P1 and a course and distance, work backward through the equations to find what you need. Use sin C = p/D to solve for the displacement (p), then solve for l using tan C = p/l.  p can then be converted into DLo using p = DLo cos L2. As you know the initial L1 and l1, simply add or subtract l and DLo to find L2 and l2.

sin C = p/D
sin 54.69 = p/398
p = 324.75nm

L1: 3406N
l: 350’ (S)
L2: 3016’N

Back to Plane Sailings

L1: 3406N
l1: 14632 E
Cn = 234.69 T
C = S 54.69 W

D = 398nm

p = DLo cos L2
324.75 =  DLo cos 30.2667
DLo = 376' (W) = 616‘ (W)

l1: 14632 E
DLo: 616 (W)
l2: 14016‘ E