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

Article NTSB Report: Fatal accident under pilotage in Galveston, Texas (Jan 2020)

by NTSB National Transportation Safety Board - published on 5 November 2021

The National Transportation Safety Board issued Marine Accident Brief 21/21 Thursday for its investigation​ of the Jan. 14, 2020, fatal collision of the tanker Bow Fortune and commercial fishing vessel Pappy’s Pride near Galveston, Texas.

0

Video Oil Tanker Safety: Tug Escorts, Marine Pilots, and Partnership with Scia’new First Nation

published on 26 May 2026

Alberta's government is proposing to partner with Indigenous communities to build a new West Coast oil export project. In B.C. waters, oil tanker spill prevention depends on locally operated escort tugboats and expert local marine pilots, who safely guide tankers in and out of port. On the southern tip of Vancouver Island, escort tugboats are operated in partnership with the Scia’new First Nation in the community’s territorial waters.

0

Video TV Short Documentary on San Diego Harbor Pilots and Old Pilot Boat

published on 14 May 2025

This is a short documentary done in the 1980s of San Diego Harbor Pilots. It shows the old pilot boat built in 1914. The boat was donated to the Maritime Museum and provides daily bay rides for the public. The film shows arrival of the cruise ship SS Azure Seas.

0

Article New performance standard for pilot transfer arrangements

by IMPA - International Maritime Pilots’ Association - published on 14 June 2024

This week, the International Maritime Organization Sub-Committee responsible for developing amendments to SOLAS regulation V/23 and associated instruments (NCSR 11) finalized a new performance standard for pilot transfer arrangements, which is expected to be made mandatory by SOLAS and apply to new and existing SOLAS and non-SOLAS ships from 1 January 2028.

2

Video Yellow Magnet with Sling to secure Pilot Ladder

published on 8 January 2020

Yellow Magnet with Sling to secure Pilot Ladder

0

Article Portrait of a female maritime pilot Karolina Jabrzyk

published on 9 January 2026

A portrait honouring the "vital role" women play in the maritime industry has been unveiled.

0