The aim of the Integrated Navigation System (INS) on a ship bridge should be to provide the navigator with added value and aid in the complex task of conducting a safe and efficient passage at high speeds in demanding waters. This article presents a method for analysing eye tracking data to reveal sub-optimal design in the bridge layout and in the software graphical user interface on a maritime navigation display. The analysis of eye tracking data with a focus on scan path events indicates sub-optimal design, and the paper provides suggestions for improvement in design and interfaces. Pros and cons of using Eye Tracking Glasses in a maritime environment are presented. The importance of not affecting the normal behaviour of the navigator by collecting data is stressed, and how the software should provide good visualisation and interpretation of the eye tracking data.

It is good to see the COLREGS reappearing in Forum as a subject for discussion. R. W. Cooper (2001) is right to point out the problem inherent in rule 10(j) that one of the vessels in an encounter to which the rule applies cannot be sure whether the length criterion is met or not. Clearly some amendment is desirable.

I read the Forum article ‘Removal of an Ambiguity from the Maritime Collision Regulations’ (Cooper, 2001) and make the following comments. As a Royal Yachting Association Yachtmaster Instructor, I find that many people quote Rule 10 of the COLREGS only in part and thus are misled by its intentions.

I understand that The Netherlands are pressing the IMO to change the COLREGS so that high speed craft (HSC) have the obligation of keeping out of the way of other vessels.

There is an IMO definition of high speed craft which was adopted by resolution MSC 36(63) in May 1995. It is the International Code of Safety for High Speed Craft. It covers vessels on international routes but does not cover, for instance, warships, troopships, fishing and pleasure craft. However, for the purpose of the COLREGS, I am sure that this definition should be widened and then incorporated.

I agree with many of the points in Mr R. D. Pike's article printed in this Journal in May 1997.