Marine Operations Articles

Calculating the maximum stacking height of pipes

Introduction Pipes (or linepipes or joints) are used for multiple purposes and locations in the maritime/offshore industry. Onshore and offshore pipelines are used for transportation of fluids on land, over and underwater. Pipes are fabricated in an onshore facility...

Designing a spreader beam for lifting

Spreader beams are universally applied gear which is widely used in various types of lifting operations, onshore and offshore. In this article, we will explore the design of a basic spreader beam and see what design checks are needed to establish the suitability of a...

Safe Towing: Calculating a towline’s catenary and sag

Introduction Towlines connect a tug to the vessel being towed and are defined by multiple characteristics like Weight, Diameter, and Stiffness. The tension in the towline during the towing operation is not static but keeps varying with the distance between the tug and...

Designing the lashings of deck cargo using IMO CSS

Introduction More than 70% of the earth is covered by water, which makes shipping historically the easiest and cheapest way of connecting manufactures and customers across the globe and can be reasonably considered to be the artery of the global economy....

Draft Surveys: Methodology, Calculations, and common errors

Draft Surveys: Methodology, Calculations, and common errors

Introduction Marine transport is the backbone of the global trade and reasonably can be considered to be the...

Designing a clip/dog plate for seafastening

Designing a clip/dog plate for seafastening

Introduction In an earlier article, we saw how to design stoppers for seafastening. Stoppers are items that are used...

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

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...

Loadouts – An introduction

Loadouts – An introduction

Image source: Flickr Loadout Operations - an Introduction Loadout is a term oft heard of in the marine/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...

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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