Technical Articles Articles

How to use a ship’s hydrostatics to calculate its draft and trim

Introduction A ship’s hydrostatics, or hydrostats, is an oft used term in maritime parlance, and it refers to the characteristics when it is floating. What characteristics are these? How are these determined, and how can we read and understand them? Understanding...

Numerical integration methods for hull volume estimation

Introduction The hull of a ship is a complex 3D geometry, and finding out its simple properties like volume, centroid, etc. is not possible through simple formulae unlike standard shapes like cuboid or a cylinder. How do we find a property, say the volume of a...

Selecting the right Capstan for berthing a vessel

Introduction Capstans are frequently deployed mooring equipment used on all types of vessels. Capstans are berthing/mooring equipment used to multiply the pulling force on mooring ropes. Traditionally, Capstans were operated manually but in modern ships, they are...

How to do rule-based fitting calculations of a keyless propeller

Introduction A keyless propeller, as the name implies, requires no key for fastening the propeller on the cone of the propeller shaft. How is the torque then transferred to the propeller? The torque is transferred by the friction between the propeller and the...

Powering the maritime industry with Hydrogen – Part 2

Powering the maritime industry with Hydrogen – Part 2

Powering the shipping industry with hydrogen - Part 2: Hydrogen propulsion on a ship - opportunities and challenges...

A simplified method of performing fatigue analysis of offshore structures

A simplified method of performing fatigue analysis of offshore structures

A simplified method of performing fatigue analysis of offshore structures Introduction An offshore structure is...

Powering the shipping industry with hydrogen: opportunities and challenges (Part 1)

Powering the shipping industry with hydrogen: opportunities and challenges (Part 1)

Part 1: About Hydrogen – Basics, Opportunities, and Challenges Of late, hydrogen has been generating quite a buzz in...

Designing a pad-eye: little items with big intricacies

Designing a pad-eye: little items with big intricacies

Pad-eyes are one of the smallest and most universally used structural items in the maritime and Oil & Gas...

Vessel with Stern on Quay: A simplified method for mooring design

Vessel with Stern on Quay: A simplified method for mooring design

A vessel at berth experiences much lower forces compared to a vessel in the open sea due to the milder environment,...

Cathodic Protection – Ships, Offshore Platforms, FPSO’s and Pipelines: a comparison

Cathodic Protection – Ships, Offshore Platforms, FPSO’s and Pipelines: a comparison

Cathodic protection of a structure is an exercise which requires close study of the structure on which it is going to...

Role of a naval architect – a walkthrough (Part – 1)

Role of a naval architect – a walkthrough (Part – 1)

This is the first in a series of articles on 'Role of a Naval Architect' by Mr Bijit Sarkar, a Naval Architect with...

The bulbous bow – why some ships have it and others don’t

The bulbous bow – why some ships have it and others don’t

By Tamal Mukherjee, This is the Part 1 of a two part article on the Bulbous Bow. Part 2 can be accessed here *This...

Mitigating risks during subsea cable installation

Mitigating risks during subsea cable installation

Over the last 20 years, the interest in offshore wind power generation has increased substantially. Offshore Wind...

A simple method of selecting the right anchor for mooring a tanker/gas carrier

A simple method of selecting the right anchor for mooring a tanker/gas carrier

Anchoring is a fundamental and sensitive operation for a vessel. When a vessel is at anchor, it swings to align itself...

Designing a simple 4-point lashing system for a Deck Cargo

Designing a simple 4-point lashing system for a Deck Cargo

Introduction Lashing of a deck cargo on a ship involves different means and mechanisms to secure the cargo to the deck...

Calculating a Ship’s Design MBL using OCIMF MEG-4

Calculating a Ship’s Design MBL using OCIMF MEG-4

In Part 1 of this article, we saw a step by step guide to calculate the Environmental forces on a vessel based on...

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