Category: Navigation

Automatic Identification System

AIS is a system that transmits vessel position, course and speed via a VHF radio channel to all ships within

Parallel indexing is an effective way of monitoring a vessels progress along a preselected track using a radar. As a

A compass is equipment which is used to find direction while at sea. A compass tells the direction in which

The speed log is a device used to measure the speed and also the number of nautical miles the vessel

90% of all the shipping casualties occur in coastal and port areas. The coastal passages leading to ports are generally

The created route must be checked for potential dangers in case any have been overlooked during route creation. The system

When using the ARPA the following points to be considered: For collision avoidance purposes an ARPA should be sea stabilized

The sextant is an instrument used to measure angles. Its arc is one sixth of a circle. Hence it is

A change in draught may arise during a voyage due to factors such as cargo and ballast changes as well

Below is the list of mandatory alarms / indication as per MSC Resolution 232(82). Alarm: An alarm or alarm system