How to apply for a letter of initial assessment

Complete MSF 4352 for a letter of initial assessment (LIA) leading to the issue of a notice of eligibility for engineers.


Letter of Intial Assessment App Form (MSF 4352)

This file may not be suitable for users of assistive technology. Request an accessible format.

If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email Please tell us what format you need. It will help us if you say what assistive technology you use.


This application form is for seafarers working on board yachts or within the armed forces looking to gain a letter of initial assessment for a route to apply for merchant or yacht licences.

Important - before completing this form, please read the guidance notes and instructions on pages 6 and 7.

Please provide an email address in block capitals for us to inform you that we have received your application.

The MCA is unable to provide a counter service.

Published 17 April 2014
Last updated 12 November 2018 + show all updates
  1. Application form updated with fee change.
  2. Application form has been updated
  3. First published.