Chartwork theory Flashcards
How do you correctly maintain charts on board?
Appropriate Charts Should be up to date
Consult the chart dialogue
Order charts online/email/phone
Store them in a suitable area
How do you correctly maintain charts on board? Pt 2
Store charts by numbered folio/geo area
All charts/publications should be corrected weekly
Use a 2B pencil when writing on charts
Do not have any liquids around the charts
How do you correctly maintain charts on board? Pt 3
Write in a common language
Annotations should be kept on charts until voyage is complete
Dispose charts securely
Label Charts used for training
What are the rules of charts under SOLAS Chapter 5 Regs 27?
They are Adquate and Up to Date
They are the Correct charts to use
They are Relevant to use
Published by a flag state’s Hydrographical Office
What does “A” stand for in APEM and what does it mean?
“A” Stands for Appraisal
Gather all relevant information to the voyage
Look for all possible Hazards that could occur
Use Appropriate Maps, SMS, charter’s instructions to monitor hazards
What does “P” stand for in APEM and what does it mean?
“P” stands for Planning
The process of Plotting the route on the chart
All information should be Clearly Marked on the charts
Things that should be plotted would be Waypoints, Reporting Points etc
What does “E” stand for in APEM and what does it mean?
“E” stands for Execution
Fine tuning the Plan
ETA’s of important points
Up to date weather Reports
What does “M” stand for in APEM and what does it mean?
“M” Stands for Monitoring
Make sure the vessel maintains it’s intended track
A single system should not be relied on
Rely on appropriate Navaids and EN’s when monitoring.
Give 5 Points about Mercator Charts
They are a special purpose used for navigation
Are conformal; Preserves Shape, Not Size
Has area distortion
Only map projection that shows true compass bearings
Straight lines will always intersect with longitude lines at the same angle
Give 5 Points about Gnomonic
Are used for Passage Planning
Straight lines are arcs of a great circle
A Straight line connecting two points show the shortest route between them
A curved line is a rhumb line
Meridians and lines of latitude are curved
