Thousands of miles across the open ocean can seem like the easy part of a ship's journey. The real challenge begins when a massive vessel reaches the final few dozen miles, where open water gives way to narrow channels, strict traffic controls, powerful tugboats, and enormous locks. Nowhere is this more apparent than at the Panama Canal, where ships must be carefully guided through a complex system designed to move them between two oceans. So how can the last few miles of a journey become...
This video shows an introduction on the Spiral-Test-Manoeuvre and describes the procedure how to steer through this manoeuvre and measure the data needed. The results will be displayed in a characteristic diagram allowing to identify stable and unstable conditions and related, detailed information, e.g. spiral loop width and height, rudder angle of neutral effect. Samples of stable and unstable ship behaviour demonstrations will be shown by Fast Time Simulation using the SAMMON Planning tool.
