Map lines/objects are related only to "main coordinates"
VERSION 3
OWNALLIANCE 0
DIFFICULTY 1
TOTALNUMSIDES 0
NUMDRIVEABLES 0
MONTH 1
WORLDGRID 2 <- map size. 2 is default but you can try 3 or even 4 (~1500x1500 nmi)
LATLONG 51.727554
159.503586 <- "main coordinates" for terrain map
;
SEASTATE 3
MDR 0 0 0
BOTTOMTYPE 0
TIMEOFDAY 12
WEATHER 0
CLOUDHEIGHT 4500
SSP 0
MAPLINES
LINE 193.638031 346.712830 318.119354 216.911774
END
If you add 2 to red marked values (
LATLONG 53.727554
161.503586), map lines coordinates stay the same but terrain map will be moved.