Chart(s): Plotting Sheet, maldive1.gif

Sight Reduction and
Dead-Reckoning problem     Leg 33      082497   Test your knowledge!
-----------------------    ------      ------   --------------------

At 19:00:00 @ 29/06/1996 our DR position was (09d 50.4'N  64d
50.3'E). Current Drift is 085d @ 8Kts. Var.3dW, Dev2dW. Speed 9 Kts.
TC 123.2d The sky is still solid over cast.

1) What is the distance to our Mali Waypoint(04d 30.0N  73d 00.0'E)
   from our 19:00:00ZT @ 29/06/1996 DR?

   What is the Compass Course to Steer (CCMg)?
-- -------------------------------------------

2)  What is our Zone Time ETA and date at the Mali' Waypoint
    (4d 30.0'N  73d 00.0'E)?

    What is the the Time Zone at the Waypoint?
--  ------------------------------------------

3)  What is our Compass Course Made Good/Compass Course to Steer to Mali'?
--  ---------------------------------------------------------------------

Begining at 18:23:30ZT on 30/06/1996 we get sights of the following stars
through a clearing sky.

     GMT            Body           Hs             Zn

     13:23:30       Procyon        16d 04.9'      273.5d
     13:25:16       Antares        25d 08.4'      123.4d
     13:33:16       Dubhe          31d 54.6'      346.0d

4)  What is the DR at 18:23:30ZT?
--  -----------------------------

5)  What is the FIX plotting the 13:23:30GMT sight?
--  -----------------------------------------------

6)  What is the TC to the Mali' waypoint?

    What is the Compass Course/Course to Steer from the FIX to the
    Mali' waypoint(4d 10.0'N  73d 00.0'E)?
--  --------------------------------------------------------------

From our Mali' waypoint to the low lying reef island it is 20 miles.
Currents in its viciniy are unpredictable. We will need to approach
with daylight.

7)  What is the Zone Time of SunSet(SS)?
--  --------------------------------------------------------------

8)  What is the Zone Time(ZT) and Date of our ETA at the Mali' waypoint
    using the latest calculated SMG from Q6?
--  --------------------------------------------------------------------

Note:
Lat & Lo = XXd XX.X', Date=DD/MM/YY, HE 8 Feet, Index correction -.2', Time
hh:mm:ss in UTC/GMT. Silicon Sea is a medium displacement sailing vessel, 40
Feet LOA. 38 Feet LWL; Cutter rigged. Looks a lot like a Mason. Can tack to
45d. Dist to Horizon: Nmi = SQRT HE@mtrs x 2.07; Nmi = SQRT HE@ft x
1.17. Water Tank = 60 gal(Imp.). Fuel Tanks = 90 gal (Imp.). Fuel
consumption .450 gal/Hr at 8.3 Kts.

PLEASE respond with your results and thinking on these exercises to the
NAVIGATION list at large. If you have questions or problems, A lot of folks
on the list are knowledgeable and willing to help. Any questions or doubtful
areas will be responded to promptly. Let us hear from you soon!

Good Navigating!

   -=The Navigation List Working Group=-

        Peter Smith  - psmith@wellspring.us.dg.com
        Ron Legere   - ronald.legere@yale.edu
        Tony Severdia- anthonys@pacbell.net
        Wes Murfin   - wmurfin@onslowonline.net (Cartographer)
        John Simmonds- mobi@netconnect.com.au
        Dan Hogan    - dhhogan@lightside.com


