Rule 10 TSS: Traffic Separation Schemes

(1 review)
Number of Pages:
Published Date:
April 2013
Book Height:
235 mm
Book Width:
155 mm
0.5 kg
Current Stock:
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This publication is a guide to navigating and collision avoidance when sailing through a traffic separation scheme. It is useful to all deck officers learning the application of Rule 10 of the COLREGs. Accident case studies illustrate both operational and safety considerations and are visually supported by ARPA screenshots.

This publication offers comprehensive guidance on using COLREGs when navigating in a traffic separation scheme. The concept of a TSS is explained, in addition to its criteria and design according to IMO guidelines. The book is supported by additional concepts, such as ‘hampered vessels’, grounding these in COLREGs guidance and offering manoeuvring advice. The aim of this book is to isolate major causal factors that, when followed, break the ‘error chain’ and stop accidents from occurring.

Section 1 Understanding Rule 10 and the Need for TSS Routeing Measures
1.1 A History of Ship Routeing and the Development of Traffic Separation Schemes
1.2 The Concept and Application of Traffic Separation
1.3 Rule 10 Traffic Separation Schemes

Section 2 The Use of COLREGs when Operating in the Vicinity of a TSS
2.1 Approaching and Entering a TSS
2.2 Lookout
2.3 Case Study of the Grounding of ‘LT Cortesia’ on the Varne Bank
2.4 Assessing Risk of a Collision
2.5 Case Study of the Close Quarters Situation between the ‘Costa Atlantica’ and the ‘Grand Neptune’
2.6 Safe Speed
2.7 Case Study – Collision Between HSC ‘The Venetian’ and Fishing Vessel ‘Yue Tai Shan 33040’ (Safe Speed) 69
2.8 Action by Give Way Vessel
2.9 Crossing Vessel Encounters within TSS
2.10 Case Study ‘Scot Isles’ and ‘Wadi Halfa’
2.11 Action by Stand-on Vessel
2.12 Case Study of the Collision between ‘Sand Heron’ and ‘Fv Celtit’ (Action by Stand-on Vessel)
2.13 Overtaking in Clear Visibility
2.14 Restricted Visibility
2.15 Case Study ‘Tricolor’/‘Kariba’/‘Clary’
2.16 Case Study ‘British Trent’ and ‘Western Winner’

Section 3 Special Circumstances to Consider when Transiting a TSS
3.1 Defensive Navigation
3.2 Hampered Vessels in a Crossing Situation
3.3 High Speed Craft (HSC)
3.4 A Special Case – Three Green Lights in Singapore Strait
3.5 Pilot Boarding Stations

Number of Pages:
Published Date:
April 2013
Binding Format:
Book Height:
235 mm
Book Width:
155 mm
0.5 kg

Kevin Vallance


  • 5
    Good Value, highly readable textbook leaves no excuses for TSS ignorance

    Posted by Nautilus - September 2014 on 30th Apr 2021

    This new textbook on traffic separation schemes is intended to fill a gap in the available study materials – as explained by author Kevin Vallance in our profile on page 29. Written by an experienced deepsea pilot, the guide helps readers to understand a vital aspect of the international collision regulations and put the rules into practice. Clearly and attractively laid out, Rule 10 TSS uses illustrations and contrasting colours to make the subject matter easily digestible. Captain Vallance told the Telegraph that readability was at the forefront of his mind when writing the book, and he particularly wanted to make it accessible to mariners whose first language is not English. Efforts have been made to choose recent and highly relevant case studies, in order to bring home the importance of the Colregs and help students to realise that this is not an academic exercise. In addition, the price has been kept at a reasonable level and the paperback format isn’t too weighty, so there’s no excuse not to have a look at the book. Let’s hope everyone who needs this gets a copy and that safety at sea improves accordingly.