Under Keel Clearance
A change in draught may arise during a voyage due to factors such as cargo and ballast changes as well…
Category: Navigation
MANDATORY ECDIS ALARMS AND ALARM SETTING
Below is the list of mandatory alarms / indication as per MSC Resolution 232(82). Alarm: An alarm or alarm system…
ENC CHART CORRECTION
ENCs are updated by weekly ‘Notices to Mariners’ issued by Hydrographic Offices / Regional ENC co-ordination centers ( RENC) and…
ECDIS – Detection Area
A valuable function of ECDIS is to continuously display position fixes and at the same time, monitor a detection area…
Storm Navigation
Finding the Quadrant – Northern Hemisphere Northern Hemisphere If the wind veers she is in the right hand semicircle (Dangerous…
Weather Routeing- Planning
Weather routeing is the procedure of ensuring that the ship makes an ocean passage in the least possible time conducive…
ECDIS – Compilation Scale and Scale Minimum
During passage planning the 2nd officer plans a passage apparently clear of visible dangers to navigation. ( IGNORE SHALLOW CONTOUR…
ECDIS – Contour Settings
Traditional method of passage planning on paper chart: Using a draft of 14 mtr and applying a 2 mtr safety…
ECDIS (Safe or Risk to Navigation)
Numerous groundings and near misses have occurred on ECDIS equipped ships that could have been avoided but for failures in…
Navigation Safe Practices (II)
Safe practices in navigation are an important aspect of the overall safety of the ship. Perhaps more important than knowing…