Product

Tug Stability - A practical Guide to safe Operations


by Captain Henk Hensen (Marine Consultant) 67

Tug Stability - A practical Guide to safe Operations
A must for tug operators and tug masters

Numerous harbour tugs have capsized often with dramatic consequences. Stability is a complex subject and mainly a specialism of naval architects. Tug masters seldom have this detailed knowledge – yet they experience the effects of a tug’s stability every day when manoeuvring their tug, either free sailing or when assisting ships.

Tugs will often be working with towline forces, hydrodynamic forces, steering and propulsion forces at or near their maximum with respect to the vessel’s stability. It is, therefore, not just desirable but necessary for tug masters to have at least a basic idea of the elements of stability.

They need to know where the limits are, and what the consequences could be, if tug handling practices don’t conform to the rules of stability in normal circumstances and also when extreme conditions such as dense fog and storms occur.

Furthermore, a tug’s stability is not a static condition but can change with every moment. Alterations in the amount of bunkers or stores, water on deck, slack tanks and ice accretion, all complicate the stability situation.

These various factors could combine to affect stability in a negative way and may even culminate in a very dangerous situation for the tug. In writing this handbook, master mariner FG and pilot Captain Henk Hensen and naval architect Dr Markus van der Laan have focused on the practical aspects of stability, tug design and equipment and also on the consequences of unsafe procedures.

Most items are clarified by simple drawings and photographs in order to optimise the explanations. It is written in such a way that it can readily be understood by all tug masters and all others in one way or another involved in tug operations, regardless of their underpinning education, formal qualifications, nationality or operational backgrounds.

The book is published by ABR Company Ltd. UK, and can be ordered at: www.tugandosv.com
What's your opinion on this?
Login or register to write comments and join the discussion!
Read more...

Article Humphree AB awarded best motion controls supplier 2020 by Baird Maritime

published on 11 February 2021

Humphree motion control systems appear on these pages almost weekly. Established 19 years ago by a group of very experienced Swedish marine engineers, the company has made a distinguished name for its products in the comparatively short time since.

0

Article Effects of the Chinese New Year on the global ship traffic

by Simone Moser, LuxSpace Sàrl - published on 29 January 2020

This year, the Chinese New Year holiday celebrates the year of the Rat. The Chinese New Year, also known as the Spring Festival or Lunar New Year is celebrated by more than 20% of the world’s population. More than that, it is also the longest seasonal holiday in China. Most of the population saves up its annual holidays to take a few weeks off and spend time with the family.

0

Article CRPPA Seeks 28 Percent Raise Due to Mississippi River Challenges

by Marine-Pilots.com - published on 5 August 2020

According to a report from the Maritime-Executive.com the Crescent River Port Pilots Association wants to raise the pilotage fee.

0

Video HMM - Maiden voyage of HMM Algeciras #8-Rotterdam-RWG

The maiden voyage of HMM Algeciras #8-Rotterdam-RWG: The birds-eye view of the largest mega containership in the world on 3 June 2020. Look at the port-side aspect moored starboard-side in Rotterdam.

0

Video Ojek laut para Maritime Pilot Indonesia

Crew motor pandu sangat berjasa sekali buat kami, mereka mengantar n menjemput kami ke kapal saat tengah laut . Tanpa mereka kita tdk bisa bekerja.. terima kasih crew motor pandu.

0

Opinion A Corrected Version on Positioning of Pivot Point

by Capt. Santosha K Naya - 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.

0

Video PILOT VESSEL SPINDLETOP

BREAUX'S BAY CRAFT 90' PILOT VESSEL

0

Video Example of Covid-19 protection in India (Pilot Boat)

Pilot disembarkation from ship (kakinada)
Editors note:
The shown protections are very massive in our opinion.
What does our community think about?

0