Handling a ship in congested or high traffic areas is not an easy task. Congested waters are high density traffic areas where a vessel is likely to collide with another vessel if ship navigation is not carried out in the right manner.
As there are several vessels present in the vicinity, chances of collision or any other form of accident is very high. In such conditions, the officer on watch and the ship’s master must take all the necessary precautions to avoid any kind of accident.

Credits: PROIvan Safyan Abrams/flikr.com
For navigating through congested waters, the officer on watch must know his duties well and be aware of the positions of ships in the vicinity and other fixed structures. He must make full preparations to sail through such areas by taking the following actions:
- Arrange for more lookouts (Know what are the duties of ship lookout here)
- Inform the master about the current situation and action plans
- Test manual steering and change over to manual steering if required.
- Inform engineers in the engine room about the current situations and next steps
- Reduce the vessel’s speed to a safe speed for navigation
- Run parallel power units for steering gears for additional safety
- Call the master when needed
While navigation through high traffic areas, the master of the ship is usually in command of the vessel. On receiving information on the situation of the vessel and surroundings, the master should arrange of more lookouts and take help from more officers if required.

Representation Image – Photograph by G F Khan
However, navigation through congested waters in restricted visibility is a daunting task. In such cases, additional lookouts must be posted at different places and the latest International Regulations for Preventing Collision at the sea must be followed.
All the actions mentioned in “Navigation in restricted visibility checklist” must be taken and appropriate fog signals must be sounded. The master shall than inform the engine room about the situation and take all precautionary measures that are necessary.