Video

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


published on 29 September 2021 -  92 -

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.
What's your opinion on this?
Login or register to write comments and join the discussion!
Read more...

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...

1

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

0

Opinion Simulators in Marine Pilot Training: AMPI Position Statement

by Australasian Marine Pilots Institute - published on 18 October 2024

One of AMPI’s core missions is to advocate for the safety and well-being of marine pilots, and an essential part of that work is developing Position Statements.

0

Opinion Example of a Passage Plan used by Portsmouth Pilots, UK

by Tim Cummins, Portsmouth, UK - published on 10 February 2021

Created by Tim Cummins. This is an uncontrolled example of the latest passage plan used by the Pilot Service at Portsmouth International Port.

0

Article Navigation alternative in the event of GNSS failure due to jamming or spoofing

by TRENZ GmbH - published on 7 April 2025

What happens when GNSS fails? In maritime navigation, this isn’t a hypothetical scenario – it’s a growing risk. Spoofing, jamming, and GNSS outages are increasing, especially in the Baltic Sea region. A failure can cripple navigation systems – with potentially serious consequences.

1

Video Dublin Port People - Robbie Cox - Marine Operative on Pilot Boat

published on 29 August 2020

As part of our Port Perspectives series we have captured the perspective of what is like to work in Dublin Port from some key members of our team. This video features Robert Cox, a Marine Operative at Dublin Port Company. Robbie as he is better known provides an insight into his varied role at the Port from operating Pilot Boat Camac, delivering Pilots safely to vessels, to placing fenders at the quay wall no two days are ever the same! Robbie also captures some amazing images of Dublin...

0

Video Transport maritime : le rôle crucial des pilotes du St-Laurent

published on 17 October 2022

Toutes les 40 minutes, un pilote du Saint-Laurent embarque à bord d'un navire de commerce qui transite entre Montréal et Québec. 230 pilotes sont chargés de guider les embarcations dans la voie maritime : une des plus dangereuses au monde. Un métier essentiel à l'économie du Québec, qui est payant, mais qui vient avec son lot de contraintes et de stress. Catherine François nous amène à bord d'un porte-conteneur qui sillonne le fleuve. Le reportage de Catherine François au #TJ18H -- Rendez-...

1

Article First female marine pilot beats the tide in Djibouti

published on 21 May 2021

Sea transport has for many years been a reserve of men with few women getting the opportunity, especially in most African countries. But for Fatouma Ali Ahmed, women can equally steer ships just as men can do.

0

Video Cork pilot boat- Failte

published on 19 January 2021

0