Select Page

# Towing Articles

## Designing a closed chock as per IACS rules

Introduction   Chocks are used universally for mooring and towing operations on ships. For towing operations, Chocks are used for guiding the towing rope from the winch through the outer shell of the vessel to the tug. For mooring operations, the chock is used to...

## 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...

## 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...

## Selecting the right equipment for towing operations – Emergency Towing

In Part 1 of the article, we discussed the regular towing arrangements and how to select the towing gear for the same. In this part, we will discuss the components of the emergency towing arrangement and how to select them. The purpose of emergency towing equipment is...

## 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...

## 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,...

## Selecting the right equipment for towing operations – Emergency Towing

In Part 1 of the article, we discussed the regular towing arrangements and how to select the towing gear for the same....

## Selecting the right gear for towing operations – Part 1

Towing operations seem pretty straightforward – we just need to connect the vessel to be towed to the right sized tug...

## 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...