Maritime Industry Articles

Vessel Draft Survey Accuracy

by Chris Zeringue, Owner, MTS Marine Techincal Surveyors                             The key to accuracy in a Vessel Draft Survey may very well be found in a hole in the ship. I boarded my first vessel at the age of 17 in 1975. I was hired out of the local shape-up...

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...