Marine Operations Articles

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...

Three simple but useful calculations when towing a Vessel

In this article, we will explore three simple but useful calculations that can be used for towing operations. They are: Towline Stiffness Propeller race Towing bridle force DNV-RP-H1o3, Modelling and Analysis of Marine Operations, FEBRUARY 2014 has been referenced...

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...

The why and how of designing a lifting beam

The why and how of designing a lifting beam

Lifting beams are universally applied gear used widely in various types of lifting operations, onshore and offshore....

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...

Loadout Ramps – design and analysis of the simplest flat plate ramp

Loadout Ramps – design and analysis of the simplest flat plate ramp

Loadouts are a complicated exercise and require intricate engineering calculations to ensure success of...

Why the bollard pull calculation method for a barge won’t work for a ship

Why the bollard pull calculation method for a barge won’t work for a ship

In my working with the marine transportation industry for more than a decade now, I have come across many...

STEEL COILS LOADING – ITS CHALLENGES AND WAYS TO OVERCOME

STEEL COILS LOADING – ITS CHALLENGES AND WAYS TO OVERCOME

STEEL COILS LOADING – ITS CHALLENGES AND WAYS TO OVERCOME by Mr. Spiros Malliaroudakis (Founder &...

Mooring System Design and Analysis

Mooring System Design and Analysis

Mooring System Design and Analysis by Rahul Kanotra, Consultant Naval Architect As the offshore industry moves towards...

Cargo Stoppers – why they are critical and how to design them

Cargo Stoppers – why they are critical and how to design them

Stoppers and their critical role in seafastening of cargo Introduction A cargo transported on the deck of a ship is...

Are you chartering a tug bigger than necessary for your Barge?

Are you chartering a tug bigger than necessary for your Barge?

Barges are one of the most frequently used means for transporting deck cargo of...

Fendering – an Introduction

Fendering – an Introduction

In this two part article we will talk about Fendering, which is one of the basic but critical operations related to a...

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...

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