BMC Servicewide exam Study Guide Solutions
When should buoys be repainted or cleaned - Ans:-cuts over 6 inches
if more then 25% of area is obscured (growth)
Retro white numerals on buoys not to exceed.. - Ans:-not to exceed 16 inches
retro panel specs on buoys not to exceed... - Ans:-not to exc...
Rhumb line - Ans:✔✔-used on mercator chart allows for navigating with straight lines(nautical charts)
gnomonic - Ans:✔✔-not normally used for navigation
they aid in long list nav by allowing you to use great circle courses
mean lower water - Ans:✔✔-tidal datum that is the average of all the lower water heights over 19 years
depth charts - Ans:✔✔-use the average of the lower of two tides tides in tidal cycle
chart order sizes - Ans:✔✔-sailing - 600,000
general-15000-600,000
coastal 50,000-150,000
harbor -larger then 50,000
small craft 40,000 and larger
chart order sizes - Ans:✔✔-sailing - 600,000
general-150,000-600,000
coastal 50,000-150,000
harbor -larger then 50,000
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