Container ship SHAHRAZ and bulk carrier SAMUDRA SAKTI I are reported to run aground in Singapore Strait south of St John Island at around 1900 UTC May 10, close to each other, while proceeding in the same direction, probably trying to avoid collision. As of 0700 UTC May 11, both ships remain in the same positions, coordinates don’t change. SHAHRAZ is en route from Port Klang to Yangshan China, SAMUDRA SAKTI I is en route from Belawan to Bayah, southwest Java.
The Bollard Pull value, which can be interpreted as the maximum thrust that is developed for a specific amount of time by the propulsion systems of any vessel to the fullest , when it has zero speed in the forward direction, is the criterion that allows us to understand how suitable a tugboat is for a port maneuver or a towing operation.
A handy and simple tool to determine in a minimum time what is really needed as tug assistance, is the Bollard Pull Calculator which calculates in an approximate way the total required tug power for ships in various conditions of wind and current. This tool can be loaded as an app on the smart phone.
