Test Case Crossing Collision

Introduction

This page describes one of a series of selected Test Cases which have been analysed/verified by use of the IWRAP program and by hand calculation. Only the number of collision candidates is calculated.

This test case calculates the number of Crossing collisions per year.

The Scenario

To calculate this scenario with the IWRAP tool, do the following steps:

• Define leg;
• define traffic distribution in each direction;
• define causation factors;
• define number of ships in each direction;
• run the job and read results.

Hand calculation of the Crossing Collision Scenario

The geometric number of crossing collisions candidates for crossing waterways can similarly to Eq. (4.2) be expressed as:

This result is equal to the result calculated by IWRAP.