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 Harbor Pilots / Pilotage in the Philippines

published on 27 September 2020

What does it take to become a Harbor Pilot in the Philippines

Video Maritime Safety Week - Pilot Training (UK)

published on 6 July 2021

At the Port of London Authority, an immersive pilot simulator is designed to continuously train and assess pilots to maintain quality and skills in the industry.

Video Pilot launches of Port Phillip Heads.

published on 28 May 2024

Three pilot companies operate launches from Queenscliff. They take pilots to and from the shipping that comes through Port Phillip heads to the ports of Melbourne and Geelong.

Video Women Pilots at the Port of Houston with Howard Middleton and the First Woman Pilot Holly Cooper

published on 17 December 2025

By 2001, the Houston Pilots led the way in hiring minorities and women, and a few years later it formed a nonprofit called Anchor Watch, to offer scholarships to maritime students in need and boost opportunities for minority and women candidates. Captain Holly Cooper joined the Houston Pilots in 1994 as the group’s 151st pilot and the first woman to begin training as a deputy.

Video Singapore Bunker Tanker Loading at Universal Terminal..

published on 6 September 2021

Movement to Universal Terminal Jetty 7, bridge view with Pilot Onboard

Article New pilot boat delivered to Spain's Port of Ferrol

by Baird Maritime - published on 9 September 2024

Irish boatbuilder Safehaven Marine recently handed over a new pilot boat "Punta Do Cruceiro" to the Port of Ferrol in northwestern Spain

Video Pilot Vessel "DELTA CHARLIE", Rio de la Plata

published on 5 April 2020

Pilot Vessel "DELTA CHARLIE" Arriving at #Recalada #BoardingStation #KM239,1 #PuntaIndioChannel #RioDeLaPlata #Argentina This video shows the moment when the Pilot Vessel "DELTA CHARLIE" was arriving at #BoardingPoint #Recalada to embark the Rio de la Plata #Pilots. You can watch the full video by clicking on the following Link: / Puedes ver el video apretando en el siguiente Link: https://youtu.be/dCEQcDkgsj8 Special appreciation to the Master of the unknown Ship, his Officers and the...