Technical Articles Articles

Marine Propeller and Shafting Alignment – Part 2

Gap & Sag Alignment Gap and Sag Alignment is carried out to bring the engine to its final position, in case of directly coupled installations, and to bring the gear box to its final position in case of installations with reduction boxes. The figure below indicates...

Marine Propeller Shafting and Shafting Alignment – Part 1

*****This article first appeared in July 2018 edition of Marine Engineers' Review (MER), India. We're reproducing it for the readers of our blog***** Abstract: Since 2013, Shaft Alignment Practice has undergone a change, with developments of Analysis tools. At the...

Using Class Rules to assess the Longitudinal Strength requirement of Barges

Introduction The longitudinal strength of a vessel is integral to its evaluation for a given purpose. To get an introduction to the topic, please refer to our other article https://thenavalarch.com/longitudinal-strength-ships-introduction/ In this article, we’ll see...

The four important factors for a ship’s windage area calculations

Introduction The windage area of a vessel or offshore structure is the area that is exposed directly to the wind. As is obvious, this is the area of all items above the waterline. This will include Part of the hull/offshore structure above the waterline...

Designing a stanchion/stopper for sea-fastening of deck cargo

Designing a stanchion/stopper for sea-fastening of deck cargo

Introduction Stanchions – a familiar term for mariners and ship designers. What are Stanchions? A stanchion is...

Hydrogen as an alternative fuel for ships to reduce emissions

Hydrogen as an alternative fuel for ships to reduce emissions

,This article first appeared in the Feb 2019 edition of Marine Engineers Review. It is being reproduced with minor...

Global wave statistical analysis and its use in deepwater operations

Global wave statistical analysis and its use in deepwater operations

Why do we need wave analysis? For the design of offshore operations such as installation and transport of offshore...

Introduction to Pipe Transportation – Part 3 (Engineering)

Introduction to Pipe Transportation – Part 3 (Engineering)

Introduction to Pipe Transportation - EngineeringIn Part 1 we learnt about pipes, while in Part 2 we...

Introduction to Pipe Transportation – Part 2 (Planning & Scheduling)

Introduction to Pipe Transportation – Part 2 (Planning & Scheduling)

In Part 1, we looked at the properties of pipes. In this section, we will be looking at the Planning & Scheduling...

Pipe Transportation – An Introduction (Part 1)

Pipe Transportation – An Introduction (Part 1)

(To read Part 2, click here) This is the first part in the 3-part series on Pipe Transportation. In this part we will...

Ship Corrosion – Cathodic Protection and Sacrificial Anodes

Ship Corrosion – Cathodic Protection and Sacrificial Anodes

CATHODIC PROTECTION ON SHIPS – SACRIFICIAL ANODES Image Source: pixabay SECTION 1 – INTRODUCTION Due to the...

Longitudinal Strength of Ships – an Introduction

Longitudinal Strength of Ships – an Introduction

LONGITUDINAL STRENGTH OF SHIPS – A GUIDE Source: http://worldwideflood.com Talking about strength of a ship, the...

Bollard Pull Calculations – an Introduction (Part II)

Bollard Pull Calculations – an Introduction (Part II)

Bollard Pull Calculations for Towing Operations Part II - Finding out the maximum feasible tow speed (To read Part I,...

Bollard Pull Calculations – an Introduction (Part I)

Bollard Pull Calculations – an Introduction (Part I)

Bollard Pull Calculations for Towing Operations - an Introduction Part I – Calculating the required Bollard Pull (BP)...

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