Abstract
With the development of social economy, my country's marine industry has also made considerable progress, and the trend of large-scale ships has become increasingly obvious. In recent years, people have paid more and more attention to the maneuverability of large ships, especially whether large ships can navigate safely in restricted waters. In order to ensure the navigation safety of large ships in restricted waters, this article analyzes the characteristics of restricted waters and the maneuverability of large ships themselves, and analyzes the causes of some maritime accidents. It points out the navigation risks of large ships in restricted waters and proposes safe navigation. Countermeasures: Reasonably adjust the speed and timing of rudder use; maintain a reasonable quay wall distance; maintain a reasonable draught difference; make careful sailing preparations.
Highlights
Narrow waters generally refer to narrow waterways or waters with restricted access to and from the port
3.1 The characteristics of large ships Large ships are different from ordinary ships
4.1 Reasonable adjustment of speed and rudder timing When a ship is navigating in restricted waters, it is necessary to reasonably adjust its speed based on the relative water depth at the time and other factors
Summary
Restricted waters include shallow waters and narrow waters, and refer to waters with relatively small water depths or relatively small channel widths. The relative water depth refers to the ratio of the navigable water depth to the ship’s draft, and the relative width refers to the ratio of the navigable waterway width to the ship’s width. Narrow waters generally refer to narrow waterways or waters with restricted access to and from the port. When the ratio of channel width to ship width is ≤2, sidewall effect will appear; when the ratio of channel width to ship width is ≤1, the maneuverability of the ship will be significantly affected, and it can be considered as a narrow water area
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