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Weather routeing is the procedure of ensuring that the ship makes an ocean passage in the least possible time conducive to the safety of the vessel. In order to do effective weather routeing the following steps must be considered⦁ Ships performance curves must be drawn⦁ Understand a wave chart⦁ Draw the shortest possible track⦁ Obtain…
During passage planning the 2nd officer plans a passage apparently clear of visible dangers to navigation. ( IGNORE SHALLOW CONTOUR SETTINGS ) Consequence : The deep draft aframax tanker drawing aft draft of 15.0 m goes aground in safer waters well clear of the visible obstructions on the chart. Lets find out the reason for…
Traditional method of passage planning on paper chart: Using a draft of 14 mtr and applying a 2 mtr safety margin, the second mate would mark off areas with depth 16 mtrs and less, on the navigational chart. These areas would then be highlighted, using a pencil, as a NO GO area and the passage…
Time charterparties invariably contain an off-hire clause providing for exceptions from the obligation for charterers to pay hire from the time of delivery until redelivery. The specific terms of the off-hire clause will determine whether or not any particular event entitles the charterers to place the ship off-hire, and for how long. Using a common…
Coal is a potentially hazardous cargo and serious incidents continue to arise. In some instances it would appear that those on board were not entirely familiar with the risks, and on other occasions the coal was not carried in accordance with regulatory requirements or best practice. One example involved a crew member who was using…
Generally a port can be rendered unsafe due to: Sandbanks and shallows Obstructions such as wrecks An inadequate system at the port (such as weather warnings, mooring facilities and tug availability) to enable a ship to leave the port when weather conditions make it unsafe for the vessel to remain at berth Political situation or…
A Notice of Readiness (“NOR”) is a notification by the vessel that she is ready to start the charter service (upon delivery) or is ready to load or discharge cargo. Giving an NOR has two purposes: (i) to inform the charterers that the vessel is at their disposal; and (ii) to start the running of…
There are many areas where the transfer of bulk liquid cargoes and the methods used can give rise to either a short out-turn or a cargo contamination. If we consider the cargo loading and discharge cycle, a ship must first be prepared with suitably clean tanks to load the cargo; then a correct loading sequence…
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Numerous groundings and near misses have occurred on ECDIS equipped ships that could have been avoided but for failures in the setup and use of ECDIS. Like most of the world’s merchant fleet trading internationally, your ship(s) is most likely equipped with an Electronic Chart System (ECS) or Electronic Chart Display and Information System (ECDIS)….
Safe practices in navigation are an important aspect of the overall safety of the ship. Perhaps more important than knowing the theory of navigation. Safe Practices are followed because of good planning and commitment by the ships leadership. In the case studies given below it shall be observed that experienced watch keepers and masters involve…