TY  - BOOK
ED  - A Witherby Seamanship Publication
TI  - Passage planning principles
SN  - 1856093220
U1  - 387.5 
PY  - 2006///
CY  - London
PB  - A Witherby Seamanship Publication
KW  - Passage Planning with ECDIS
KW  - Planning Toolbox
KW  - Monitoring Techniques
ER  -