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 MV SELILI JUST SAILED IN SUNGAI SIAK

published on 29 August 2021

#Pelabuhan perawang pekanbaru #Sungai Siak #maritime Pilot #Persatuan Pelaut indonesia #Pelaut #Pelindo1 #Pelindo Bersatu

Article Pilot dispatching problem along a maritime corridor: a case study in the St. Lawrence River

published on 13 May 2025

This study presents a novel decision support process for a pilot dispatching problem in the St. Lawrence River. It integrates a comprehensive set of time-based performance measures, including working time, waiting time, and skill level differences, to optimize fairness and operational efficiency in pilot dispatching.

Video Pilot Maritime Maneuver Msc Samar

published on 26 August 2022

Article UKHO signs MoUs with Port of London Authority and Peel Ports Group

published on 19 June 2023

The UK Hydrographic Office (UKHO) signs MoUs with Port of London Authority and Peel Ports Group, strengthening collaboration in port sector.

Video Embarcando

published on 6 May 2021

Video Aberdeen Harbour Board - Pilot

published on 7 February 2020

It takes all sorts of roles to ensure safe and successful operations at Aberdeen Harbour. Meet Finn, a Marine Pilot, and find out why he enjoys working at the port.

Article Atlantic Pilotage Authority Annual Report 2020

by Atlantic Pilotage Authority - published on 12 May 2021

The Atlantic Pilotage Authority has released its Annual Report 2020.
The Pilotage Act has defined the Atlantic Pilotage Authority’s area of operation as all the Canadian waters in and around the provinces of New Brunswick, Prince Edward Island, Nova Scotia, and Newfoundland and Labrador, as indicated on the map. Within this region, the Authority has designated 17 compulsory pilotage areas.