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 Volvo Penta – Mighty Jobs – Piloting the Arctic seas of Norway

published on 11 March 2020

In this episode of Mighty Jobs we meet the piloting crew of Buksér og Berging in Tromsø, Norway. Their Volvo Penta-powered piloting boat covers around 42,000 nautical miles every year. That’s the equivalent of traveling around the world twice. The Volvo Penta IPS system makes it possible to pilot ships under all weather conditions.

0

Video OXE Marine in Indonesia

published on 13 May 2025

Pilot boat with over 2000 engine hours of operation in tough operating conditions.
OXE Marine brings its high-performance, fuel-efficient diesel outboards to Indonesia, offering a sustainable and reliable solution for commercial marine operations.

0

Video Maritime Pilot - The grounding of Leda Maersk - Episode 5

by Captain Ahmed Sati - published on 12 August 2024

An analysis by Ahmed Sati

0

Article "SAFE Passage" Journal by Australasian Marine Pilots Institute

by Frank Diegel - published on 10 March 2021

Download PDF here

0

Article Denmark first to launch data-driven remote pilotage

published on 15 May 2025

With approval from the Danish Emergency Management Agency, DanPilot and Danelec are now initiating a test program for remote pilotage – the first of its kind in the world.

0

Video Pilot services at Point Lonsdale, Victoria, Australia.

published on 14 August 2024

A busy morning with all three pilot services on jobs at Point Lonsdale, Victoria, Australia.
Ship spotting at Point Lonsdale and other water activities.

0

Article Updated App: "Bollard Pull Calculation for Marine Pilots"

by Baykal YAYLALI - published on 17 June 2024

A handy and simple tool to determine in a minimum time what is really needed as tug assistance, is the Bollard Pull Calculator which calculates in an approximate way the total required tug power for ships in various conditions of wind and current. This tool can be loaded as an app on the smart phone.

1