Opinion Bow Truster Effect on Ship's Headway

by Capt. Hugues Cauvier - published on 14 July 2022

When the bow thruster has been in operation for a while, pilots often notice that the ship not only turns but also gains speed. But why is this? Opinion by Capt. Hugues Cauvier.

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Opinion A Corrected Version on Positioning of Pivot Point

by Capt. Santosha K. Nayak - published on 18 November 2020

Understanding the fundamentals of the pivot point is highly required for understanding the alteration of the courses. Pivot point is an imaginary point on the vessel which turns on a circular path on the perimeter of vessel’s turning circle when the vessel makes a turn. The knowledge about the position of the pivot point in a manoeuvring situation provides the ship handler with the information on the geometry of motion of the ship.

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Opinion Scientific Fact: The ‘traditional’ understanding of the ship’s pivot point is wrong!

by Tim Cummins, Harbour Pilot, Portsmouth International Port - published on 9 July 2020

In fact, the pivot point that we “see” is a trick of the eye, it looks like the ship is rotating about this point but in fact it is elsewhere, a point that you cannot see.

Related content

Video Bow thruster effect on ship's headway 1

by Capt. Hugues Cauvier - published on 14 July 2022

What is causing the forward motion of a stopped vessel using continous bow thruster action?
by Capt. H. Cauvier

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Video Hugues Cauvier: Understanding the ship's pivot point (complete video)

by Capt. Hugues Cauvier - published on 3 September 2024

This video has been recut and edited by the creator Hugues Cauvier. Previously there were three episodes, which have now been combined into one.

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Video How to Launch a Pilot Boat–Behind the Scenes at Point Hope Shipyard

published on 20 June 2025

Welcome to Point Hope Shipyard in Victoria, British Columbia, Canada. In this video, I follow the float off of the Pacific Navigator, a hardworking pilot boat that serves the Port of Victoria and Ogden Point. We watch as the vessel is pulled along the marine railway, rotated on the turntable, and positioned onto the cradle. Once secured, the cradle lowers to float-off depth, and the Pacific Navigator fires up her engines for a short harbour spin before returning to duty. Some segments,...

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Video How GPS works? Trilateration explained

published on 4 July 2019

How GPS works? Trilateration explained

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Video Next Generation ECDIS

published on 2 November 2020

Next generation of Navigation. This video shows the new technologies put up on Navigation. #ecdis #lifeatsea #seafarer

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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.

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Video SWATH vs. Mono Hull

published on 21 December 2019

Challenge between SWATH tender "DÖSE" and two 30m mono hull vessels in 2013.

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Video Singapore strait accident: Iranian Container Ship MV SHAHRAZ broke into two

published on 19 May 2020

Container ship SHAHRAZ and bulk carrier SAMUDRA SAKTI I are reported to run aground in Singapore Strait south of St John Island at around 1900 UTC May 10, close to each other, while proceeding in the same direction, probably trying to avoid collision. As of 0700 UTC May 11, both ships remain in the same positions, coordinates don’t change. SHAHRAZ is en route from Port Klang to Yangshan China, SAMUDRA SAKTI I is en route from Belawan to Bayah, southwest Java.

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Article New pilot boat "Stainsby" for PD Port (Teeport, UK)

by Marine-Pilots.com - published on 4 November 2020

It will replace the "Coatham" pilot vessel which will now find a new home at the Port of Tyne after racking up 800,000 miles servicing the River Tees over a 20-year period.

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