TY  - BOOK
AU  - Mark, Bull 
TI  - Bridge watchkeeping
SN  -  9781906915926
AV  - VK233 .M3451 2023 
PY  - 2023///
CY  - London, 
PB  -  The Nautical Institute, 
KW  - Merchant marine—Safety measures
KW  - Merchant marine—Watch duty
KW  - Ships—Bridges
N1  - Include index (155-162)
ER  -