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 What really happened at the Suez Canal?

published on 5 July 2021

Exploring the engineering principles behind the recent obstruction of the Suez Canal, which caused a weeklong disruption in global shipping traffic.

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Video Port of Los Angeles: Career RePORT - Port Pilots Edition

published on 8 May 2021

Career RePORT encourages all students and educators to submit questions you want to ask a Port of Los Angeles employee: what kind of job they do at the Port, how they entered their career field, who their favorite superhero is, or what they made for dinner last night. This episode features John Mayer, Port Pilot. In his role, John: - Drives the 400-meter container ships containing goods in and out of the Port every day. - Safely navigates the cruise ships that are transitioning to and...

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Video Wind Impact on Ships Turning Motion

published on 20 January 2021

This video complements the earlier demonstration of wind effect on straight track and shows now wind effect on turning circles. It can be seen that during a turn under strong wind the ship reduces turning when it comes close to equilibrium on straight track - if the Wind-to-ship speed ratio is big enough then the ship even goes straight instead of turning. This is shown for three samples for Head, Stern wind and Beam wind. The turning can be increased if the ratio of Wind speed-to-ship...

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Video Dynamic failure of pilot boats: Risk mitigation & management

published on 12 December 2020

Following a surf riding and broaching incident and subsequent collision by an experienced vessel operator, QinetiQ have been undertaking extensive investigations into the risk mitigation and safety management of pilotage operations. This presentation looks to discuss the risks presented during pilotage services, and provide a critical review of vessel design and service delivery approaches to understand the potential risk mitigations and management of pilot boat safety.

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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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Opinion New guidance for PBAs with trapdoors. Released 4.11.2020 by NZMPA

by New Zealand Maritime Pilot's Association - published on 6 November 2020

New guidance for PBAs with trapdoors. Released 4.11.2020 at NZMPA Conference in Dunedin, NZ. Distinct difference to suggestions in many other countries, is that we challenge operators who have the ladder suspended from the accommodation ladder (gangway) and not secured to the ship. SOLAS states that pilot ladder shall be secured to the ship, and securing strongpoints, shackles and ropes shall be as strong as the sideropes.

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Opinion Five questions for Porthos Lima, Rio de Janeiro Pilots Operations Director

published on 25 November 2020

In our new new section “Five questions for ..." Marine-Pilots.com introduces pilots and other market players to our readers in short interviews.

Today we have talked to Porthos Lima, Rio de Janeiro Pilots Operations Director.

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Article Compulsory pilotage in force to and from Shenzhen's Yantian terminal

by Marine-Pilots.com - published on 22 January 2020

Compulsory pilotage will now be required for dry cargo and passenger vessels over 3,000 gross tonnes and tankers of 1,000 gross tonnes transiting eastern Hong Kong waters to and from the area of Yantian Container Terminals and Dapeng LNG Terminals, according to a Hong Kong Government Ordinance.

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