Aimed at preventing collisions between merchant and fishing vessels, the Directorate General of Shipping has proposed a Traffic Separation Scheme (TSS) off the south-west coast specifically targeting the area off Kerala.

TSS is desirable on the Western Coast, where fishing density and other traffic density are higher. The DGS has been consulting with stakeholders and considers factors like past collision incidents, merchant vessel traffic patterns and optimal sea routes to simplify traffic in converging areas. The proposal is still in the consultation stage and has not been finalised, official sources said.

TSS is a system of defined lanes in busy waterways where ships are directed to travel in specific directions to prevent collisions and ensure smooth traffic flow. These schemes are regulated by international laws and guidelines, like the International Regulations for Preventing Collisions at Sea (COLREGS).

According to sources, TSS aims to separate opposing streams of traffic by creating distinct lanes for ships traveling in different directions. It typically includes traffic lanes, separation zones or lines and inshore traffic zones. By channelling traffic, TSS reduces the risk of head-on collisions and enhances the efficiency of navigation in congested areas.

The International Maritime Organization adopts and updates TSS schemes, and their use is governed by the COLREGS. While ships are generally encouraged to stay within the designated lanes, they can deviate in emergencies or to avoid a collision.

TSS is commonly found in busy waterways like the South of Sri Lanka, English Channel, the German Bight, and approaches to major ports like Singapore. There are exceptions for emergencies, fishing within a separation zone and vessels engaged in certain operations.

Published on June 17, 2025