Video

Spiral-Test -Manoeuvre for detailed identification of Yaw Stability using Samples of Cruise Ship

published on 29 September 2021 - 92 -

Show comment section |

Found on YouTube. Created by "ISSIMS - Innovative Ship Simulation". Originally published on 2021-09-01.

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. Finally, a discussion of of ship’s hull form with loading conditions and elements like appendages completes the overview on effects of Yawing stability.
The next videos to follow will demonstrate other manoeuvres (e.g. Pull-out Test and Zig-Zag Test) which are also helpful to identify and discuss the stability condition for ships and the different aspects contributing to yaw stability.

ISSIMS GmbH
Innovative Ship Simulation And Maritime Systems

What's your opinion on this?

Video How Ship Anchor Works? - Procedure For Anchoring a Ship at Sea

published on 11 July 2020

#Anchor #shipanchor #windlass Anchoring is one of the very frequent operations onboard ships. A number of variables and external factors influence the duration and location of an anchoring operation. While the type of seabed is of utmost importance during anchoring, soft muddy grounds or clay bottoms are best preferred. It should be taken care that the anchoring bottom is free of power lines, submarine cables, pipelines or rocks. Various methods on anchoring include consideration of...

Video Critical Ship navigation done with perfection

published on 31 January 2022

Video How port pilot sail out ship from the port? Grimaldi lines catania roro ship

published on 22 April 2022

In this video I will show you Grimaldi Lines Catania RoRo Ship

Video Ns345 W6D2 Ship Interactions and Bank Effects

published on 13 October 2020

Shiphandling discussion about meeting and overtaking situations in a close quarters situation where hydrodynamic effects will come into play between ships. The lecture continues and discusses Bank Effect.

Video SImulator Training

published on 2 February 2022

Practicing in the new port before we have todo it for real.

Opinion Pilot safety: a crucial component of navigation safety

by MS Amlin Marine - published on 22 October 2024

The latest MS Amlin Marine circular, compiled by theTechnical Loss Prevention Consultant Peter van der Kroft, focuses on the importance of pilot safety in marine navigation.

Video Kiel Pilots using VR for next-level shiphandling simulation

by Captain, MSc. Remko Fehr - published on 13 December 2023

Kiel Pilots introducing Morild Interaktiv AS Virtual Reality Simulator for next-level manoeuvring training

Opinion Hybrid War at Sea

by Frank Diegel - published on 25 March 2025

Electronic warfare in the Baltic Sea is escalating rapidly, with GPS and AIS disruptions posing growing risks to maritime navigation. Russia’s hybrid strategy is targeting both safety and stability in one of Europe’s most critical shipping regions. Pilots and crews now face a new reality: navigating under threat.

Video Robust pilot boats of Netherlands and Belgium

published on 7 August 2020

These are some of the reliable sturdy Pilot boats of Netherlands and Belgium to bring and pick up Marine Pilots to and from commercial merchant vessels either inbound or outbound. The Marine Pilots are licensed PROFESSIONALS who have a thorough knowledge of a certain port and they guide the Master/Captain of commercial ships in and out of the foreign Seaport. Location: Steenbank Pilot Station, Flushing/Vlissingen Pilot Station, Wandelaar Pilot Station. Boats in order of appearance in this...

Video Perfect Simulation: Ever Given Accident in 2D plus 3D

published on 21 April 2021

On the 23rd of March 2021 the VLCC Ever Given grounded in the Suez Canal. A strong southerly wind (between 6 and 7 BFT) plus so-called bank shear caused steering issues. This a combined 2D and 3D reconstruction of the incident based on recorded AIS data.