Constant Radius Turn
In order to negotiate a plan turn, a constant radius turn concept can be used. Theory and procedures of using…
Category: Navigation
USE OF ECDIS IN RCDS MODE
All navigable waters are not yet covered by ENC data and vessel may be required to use ECDIS in Raster…
Bridge Equipments
Sextant A sextant is an instrument used to measure the angle between any two visible objects. Its primary use is…
Officer on watch Duties
Duties of an Officer on Watch (OOW) on the bridge The primary duties of an Officer on Watch are: (i)…
Tropical Revolving Storm
Definitions A Tropical Cyclone is also called as a Tropical Revolving Storm (TRS). It is defined as a roughly circular…
Safety Depth & Safety Contour In ECDIS
Use of the Safety Depth and the Safety Contour in ECDIS Safety Depth: Value set by the mariner that is used…
World Scale & AFRA Scale
World Scale 1. World Scale is the “World Tanker Nominal Freight Scale” and is a schedule of freight rates applying…
COLREG in easy language (Rule 19)
Rule 19 Conduct of vessels in restricted visibility (d) A vessel which detects by radar alone the presence of another…
COLREG in easy language (Rule 17)
Rule 17 Action by stand-on vessel (a) (i) Where one of two vessels is to keep out of the way,…
COLREG in easy language (Rule 15 & 16)
Rule 15 Crossing situation When two power-driven vessels are crossing so as to involve risk of collision, the vessel which…