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GE& Dev. (Calculator)

ALT.

D E C.

TI ME

SHIP’SNAME

FROM COMPASSERRORBY AZIMUTH (CAL.)

C / Body / Spd. DR.Lat. DR.Long. DATE (Z) ZT (ST) ZD GMT DATE(G) CT CE GMT d. ( + ) or ( - ) TAB. Dec. h d. corr. Dec. (N. or W.) H.P. (D) = IC Dip Sum Corr h.s h.a  / D/ Ο U/L (D) Add’l Sum Corr. Ho Lat. (N. or S.) Dec. (N. or S.) CosAz = Az Zn Zn Zn Var. GB MB GE CB Dev. GEis

( )

(+)

C – 15 .

TO

( )

(-)

Dev. For ship’s head

(+)

(-)

is

.

±s in D −s in L s in H o co s A z = co s L cos H o

± : L & D Samename (+) ; L & D Contrary name (-) Prefix “Az” with (N. or W.) as the name of DR.Lat. And suffix it with (e. or W.) as the name of t (LHA.) BOB C – 15


GE& Dev. (Calculator)

ALT.

D E C.

TI ME

SHIP’SNAME C / Body / Spd. DR.Lat. DR.Long. DATE (Z) ZT (ST) ZD GMT DATE(G) CT CE GMT d. ( + ) or ( - ) TAB. Dec. h d. corr. Dec. (N. or W.) H.P. (D) = IC Dip Sum Corr h.s h.a  / D/ Ο U/L (D) Add’l Sum Corr. Ho Lat. (N. or S.) Dec. (N. or S.) CosAz = Az Zn Zn Zn Var. GB MB GE CB Dev. GEis

FROM COMPASSERRORBY AZIMUTH (CAL.) Plot

(

TO

.

fix)

DR.λ/15º = E(-) ; W(+) ZT ± ZD ( ) CT ± CE * ALM ALM GMT d. d corr. d (+) or (-) (+) ALM (-) Sectant ALM ( )

*

GMT (Dec. ALM

-30’0 ;

GMT (+)

hs ± corr. Dip Star and planet ha

ALM

+ Dec. –)

Dip

;

(-)

ALM

H.P. Star and Planet

h.a ± corr. Lat. DR.Lat.

L Az t NE (Az=Zn) , SE(180°- Az=Zn) , SW(180°+ Az=Zn) , NW (360°W(+)E(-) Zn ± Var.

Gyro Bearing Zn ±GB

MB - CB

Dev. For ship’s head

is

.

±s in D −s in L s in H o co s A z = co s L cos H o

± : L & D Samename (+) ; L & D Contrary name (-) Prefix “Az” with (N. or W.) as the name of DR.Lat. And suffix it with (e. or W.) as the name of t (LHA.) BOB


C - 15 (Compass error by Az)