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

Video MANEUVERING SHIP - Ship Channel

published on 24 August 2020

Maneuvering Ship

0

Article Help needed: For better visibility of the pilot work

published on 26 November 2025

This is a tribute build to a work life at sea. It is adventure. It is history. And it is modern story of a work life for many people around the world. Vote here!

1

Video Nighttime departure from Figueira da Foz including VHF radio communication - ship time laps video

published on 9 February 2022

The Dutch coaster Mv. Stroombank is leaving the port of Figueira da Foz in Portugal. Normally operations are restricted to daylight only, but because bad weather was forecasted for the days to come we've received an exemption and were allowed to depart during dark hours. Cargo operations were running close to the departure deadline so we quickly secured the cargo and prepared the vessel for sea. The tide was running out so we used the forward spring to keep position as we went slow astern...

1

Video Nederlands Loodswezen: Instruction for Embarking & Debarking

published on 20 October 2021

Loodswezen Instructie Embarkeren Debarkeren.
Unfortunately only in Dutch without subtitles.

1

Article Vessel Pilots: Ensuring Safe Port Calls

published on 5 October 2021

Throughout the world, mariners rely upon nautical charts to guide their voyages, to assist them in avoiding obstructions, and to note any special ocean conditions when sailing.

0

Article USCG Safety Alert on Handhold Stanchions

published on 14 February 2023

On February 9th, 2023 Unites States Coast guard issued a safety alert (04-22-CH1) in which attention is drawn to the correct positioning of handhold stanchions onboard of ships.

1

Video Docking a Mega Ship -- How Marine Pilot Manoeuvres a Ship in Port?

published on 24 July 2020

#dockingship #marinepilot Docking a Mega ship in a busy port requires an experienced marine pilot to ensure safe ship docking operation. This video is an excellent overview of how marine pilot manoeuvres a ship into the port. Manoeuvring is an operation during which a vessel enters or exits coastal waters of a country, crosses several ships on the way, and proceeds towards or departs from a berth or jetty of a port. Shot By an experienced marine pilot Syatibi Azhari, who assisted MSC Ambra,...

0