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Re: Silicon Sea: Leg31
From: Millard Kirk
Date: 1997 Jul 19, 1:58 PM
From: Millard Kirk
Date: 1997 Jul 19, 1:58 PM
Dan Hogan wrote: > > Sight Reduction and > Dead-Reckoning problem Leg 31 071797 Test your knowledge! > ---------------------- ------ ------ -------------------- Answers: 1.) TC = 130.8d, Dist. = 4611 nm to 4688 nm depending on method used. 2.) EP = 13d 47.6' N, 57d 32.9' E 3.) (Antares Zn = 134.5d), (Vega Zn =53.3d), and (Regulus Zn = 274.9d) 4.) Fix = 13d 46.1' N, 59d 07.4' E Well it looks as if the captian will be mad at me again. Everything looks good on the fix........ Execept for one little thing. The EP would indicate that we traveled approximately 221 nm, but the fix suggest we traveled 301 nm.. Maybe we had more current that what we thought. The Zn for the stars looked good and the brightness and agreed. 5.) Compass Error = approx. 5.1d Yes, total error matches the known variation and deviation 6.) (A) Not considering in current EP = 13d 24.8' N, 59d 46.7' E (B) If we consider the the current EP = 13d 04.5' W, 60d 24.3' E 7.) TC = 124d Dist. = 952.3 nm figured from EP (A) in question #6. Dist. = 910.3 nm figured from EP (B) in question #6. 8.) Compass Course to Steer = 185.7d Considering Set, Drift, Var and Dev Learning the Hard Way!! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Millard Kirk KB8YQO Email - mkirk@marshall.edu 116 Lewis Ave Homepage- http://webpages.marshall.edu/~mkirk/ Barboursville, WV A West Virginia Blue Water Sailor 25504 (304) 736-6544 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--=-= =-= TO UNSUBSCRIBE, send this message to majordomo@ronin.com: =-= =-= navigation =-= =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--=-=
