Admiralty Information Overlay
The AIO is a worldwide digital dataset that is designed to be displayed over ENCs in ECDIS and other chart…
Anchor Work
Holding Power Knowledge of the type of anchor on your ship is necessary because the holding power of each type…
Turning
Lateral Resistance As a ship commences to turn and thereafter for the duration of a turn, the ship is sliding…
Effect Of Wind On Ship Handling
Vessel Head to Wind with Headway Vessel making Headway through the water, and Heading directly into the Wind. W is…
Transverse Thrust
Ahead Movement of the Propeller The effect of transverse thrust whilst making an ahead movement is arguably less worrying than…
Lifesaving Equipment Maintenance
Life Saving Appliances Maintenance Equipment / Requirement Regulation Ship Type Interval Maintenance By Remark Maintenance and inspection SOLAS II-1/3-9.3 SOLAS…
CATZOC (Category of Zone of Confidence)
CATZOC on the ENC in simple terms refers to the Quality and Accuracy of survey data and the applicable error…
Oil Tanker Cargo Tank Atmosphere Control
On a oil tanker the cargo oil tank atmosphere changes as per various operations the ship is performing. These includes…
Inert gas System
What is Inert Gas ? It is a gas which contains insufficient Oxygen to support combustion. Keeping tanks inerted means…
Slow Speed Control
Speed Many casualties are proven to occur as a direct result of excessive speed. Its effect can be insidious and…