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# Ship Design and Construction 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...

## 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...

## Designing Fillet Welds for Symmetrical Joint Sections

Introduction Fillet welds are the most commonly used weld types in marine structures. A fillet weld is used when there are two pieces of metal that are joined perpendicular to each other or at an angle. In this article, we will explore how to select the right size...

## 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...

## Designing bolts for a joint connection

Introduction   Bolts are very commonly used fastening items and used in a variety of configurations. In this...

## 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...

## Bulbous Bows – History and Design

by Bijit Sarkar, Naval Architect Introduction The eternal search of a naval architect – a perfect bow. Sadly, it never...

## 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...

## 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)

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

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

## Removing Human Error in Ship Performance Analysis

Introduction Shipping is the most dominant means of transport that facilitate global trade. Over 90% of world trade is...

## CFD in the marine industry: today and tomorrow

In the world of advancing digital technology, it important to identify all the best ways to apply it to...