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

Article Finland's Ministry of Transport and Communications launches project to reform Pilotage Act

published on 7 April 2021

The Ministry of Transport and Communications has launched a project to reform the Pilotage Act. The aim is that the new legislation would enter into force at the start of 2023.

Video Maritime Pilot - Allision in Immingham - Episode 7

by Dr. Captain Ahmed Sati - published on 17 September 2024

The collision of 3 ships, an unfortunate event that highlighted the importance of human factors on accident causation,

Article Study: Identifying cognitive challenges for safe ship overtaking in restricted

by Stella Parisi & Dimitris Nathanael - published on 9 February 2026

Navigation in constrained waters is a cognitively challenging task for seafarers requiring the combined assessment of various elements to perform it with safety. This paper presents a approach to make sense of the dynamic, uncertain,and complex work domain of sea pilotage.

Article "Pilotage Escort" among Covid-19 measures introduced at Peterhead Port

by Marine-Pilots.com - published on 17 April 2020

According to "Buchan Observer": Peterhead Port Authority has introduced remote pilotage for selected vessels entering the harbour as part of a package of measures designed to reduce the risk of staff and users contracting the Covid-19 virus.

Video Ship Pilotage to Dunkirk Harbour BreakWater.

published on 11 May 2022

Ships Arrival from Dunkirk Pilot Boarding Ground to Dunkirk Breakwaters Captured.How the Pilots boards the Ships.How the Tugs are made Fast.
Beautiful Entrance to Dunkirk Harbour.
@JeffHK @Karanvir Singh Nayyar
#Dunkirk #SeaPilotboarding #TugBoats #Dunkerque #HistoricPortWWII

Video Pilot cutter transfer journey in force six winds

published on 27 April 2020

Estuary Services crew Andrew Howland (coxswain) and Wayne Goldfinch (deckhand) transferring PLA pilot, Stephen Ford on an approx. eight-mile trip from Ramsgate to board the tanker Songa Breeze at the NE Goodwin pilot boarding ‘diamond’. Departing at 0955 on 20 April 2020, they steered an easterly course to reach the ship by 1030. Weather: wind North Easterly F6, sea state moderate to rough, visibility 10 nautical miles. Footage: ESL Edit: Theo Albanis, Port of London Authority Music:...

Article New Volvo Penta D16 IMO III solution powers pilot boats

published on 15 November 2022

In 2020, the Swedish Maritime Administration, Sjöfartsverket commissioned three new pilot vessels to replace retired vessels in its Gothenburg, Marstrand, and Lysekil locations on the country’s west coast.