Great Circle vs Rhumb Line: Which Route Is Shorter?
The straight line on your chart is rarely the shortest way there. Why the great circle beats the rhumb line over long distances, why it looks like a detour, and when to use each.
Passage Planning
Voyage Planning Checklist: The Four Stages, Berth to Berth
A voyage plan is the thinking you do before the ship moves. A practical, berth-to-berth checklist across the four stages, so nothing on the passage becomes a surprise.
ECDIS Chart Updating: Keeping ENCs Current
Electronic charts correct themselves from weekly data, which makes the lapses quiet and dangerous. How ENC updating really works, where it falls short, and what you must still do by hand.
Common ECDIS Errors: The Mistakes That Ground Ships
An ECDIS rarely fails by breaking; it fails quietly. The settings, habits, and blind spots behind real groundings, and the simple discipline that prevents them.
Passage Planning: The Four Stages
A voyage that ends badly rarely goes wrong at sea. It goes wrong days earlier, in a plan never properly made. Here are the four stages that turn a passage into decisions already taken.
ECDIS Route Planning Step by Step
A good route plan is thinking done in advance, so it does not have to be done at the wheel-over in the dark. Here is how to plan a passage on ECDIS — and run a route check that is actually honest.
ECDIS Safety Settings: Contour, Depth, and Height
ECDIS does not know what “safe” means for your ship until you tell it — and its default guess is dangerous. Here is how the safety contour, depth, and height settings really behave.
ECDIS Explained: What It Is and How It Works
The electronic chart has replaced the chart table as the heart of the modern bridge. Here is what ECDIS is, how it works, and how to make it the anti-grounding tool it was built to be.