Ship Squat and Interaction Book


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Ship Squat and Interaction Book

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SKU: BP101995

Ship squat and interaction are two significant risks for ship handlers, mainly when operating in shallow waters. This ebook provides a comprehensive guide to understanding these phenomena and how to reduce the risks they pose.


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Ship Squat and Interaction: The Definitive Guide to Understanding and Reducing These Major Risks for Ship Handlers



This comprehensive guide thoroughly explains ship squat and interaction, two major risks for ship handlers, particularly when operating in shallow waters.

The book begins by defining ship squat and interactions and explaining how they can compromise ship safety. It then discusses the factors that affect squat and interaction and how to measure and calculate them. The book also provides guidance on reducing squat and interaction and includes 15 worked examples to help readers understand the concepts.

The book’s second part focuses on interaction and discusses the causes and effects of this phenomenon. It also identifies the situations in which interaction is likely to occur and includes case studies that analyze the causes of various ship incidents related to interaction.



Key Features:

  • Comprehensive guide to understanding ship squat and interaction
  • Covers the latest research and developments in the field
  • Includes 15 worked examples to help readers understand the concepts
  • Case studies that analyze the causes of various ship incidents related to interaction
  • Written by an experienced marine engineer and naval architect


Who Should Read This Book?

  • Ship handlers
  • Marine engineers
  • Naval architects
  • Students of marine engineering and naval architecture
  • Anyone who is interested in learning more about ship squat and interaction



Whether you are a seasoned mariner or simply looking to learn more about ship squat and interaction, “Ship Squat and Interaction” is your definitive guide.



Contents Listing: 

Chapter 1 – Introduction

1.1 Introduction to the Concept

1.2 Understanding the Definition of Ship Squat

1.3 Importance of Ship Squat and Interaction for Relevant Parties

1.4 Global Locations for Ship Squat Measurements

1.5 Global Locations for Ship-model Squat Measurements

1.6 Significance of Ship Squat in the Last Four Decades

Chapter 2 – Recent Incidents and Tell Tale Signs 

2.1 Recent Ship Groundings and Sinkings 

2.2 Static Underkeel Clearances 

2.3 Dynamical Underkeel Clearances (y2) 

2.4 United Kingdom Merchant Shipping Notices 

2.5 Fifteen Signs that a Ship has Entered Shallow Water Conditions 

Chapter 3 – Depth and Width of Influence of a Ship’s Path 

3.1 Width of Influence 

3.2 Depth of Influence 

Chapter 4 – Effect of Speed 

4.1 Ship’s Speed VK in a River having a Tidal Flow or Current 

Chapter 5 – Measurement of Ship’s Squat 

5.1 The Measurement of Ship Squat on Full-size Ships 

5.2 Case Study 1 – Measurement of Squat at the Entrance to a Dock 

5.3 Conclusions 

Chapter 6 – Increase and Decrease of the Squat Value 

6.1 What are the Factors Governing Ship Squat? 

6.2 Silt Saucers and Dredging 

6.3 Angles of Heel 

6.4 Squat Formulae 

6.5 Three Worked Examples 

Chapter 7 – Squat Curves 

7.1 Squat Curves 

7.2 Squats Predicted for a Very Narrow River up to a Very Wide River 

7.3 Asymptotic Squats 

Chapter 8 – Squat when Trimmed and Steps to Reduce Squat 

8.1 Ship Squat for Ships with Static Trim 

8.2 Squats at Both Ends of a Vessel in Open Water 

8.3 Worked Example 

8.4 Procedures for Reducing Ship Squat 

8.5 False Draughts 

8.6 Ship Squat Laminates 

Chapter 9 – Mean Bodily Sinkage 

9.1 Mean Bodily Sinkage in Open Water Conditions 

Chapter 10 – Using Squat to Assist in the Reduction of Air Draught 

10.1 Introduction 

10.2 General Particulars of ‘Freedom of the Seas’ 

10.3 Definition 

10.4 Nomenclature 

10.5 Prerequisite Information 

10.6 Procedure 

10.7 Formulae 

10.8 Points to Consider Regarding Static Trim 

10.9 Worked Example 

10.10 Summary and Conclusions 

Chapter 11 – Using Spreadsheets to Determine Squat 

11.1 The All-encompassing Method 

11.2 Case Study 2 – Cross Channel Ferry Squats in the Port of Newhaven 

11.3 Case Study 3 – Squats in a Navigable Trench (Melbourne) 

Chapter 12 – Incidents in Shallow Water 

12.1 A Brief Introduction 

12.2 Case Study 4 

12.3 Squat Case Study 5 

12.4 Squat Case Study 6 

Chapter 13 – Calculated v Measured, How Accurate? 

Chapter 14 – Final Summary and Conclusions 

14.1 Nomenclature 

14.2 Ship Squat Formulae 

14.3 Merchant Ship Types – General Characteristics 

14.4 Ships of this Millennium 

14.5 Questions and Exercises on Ship Squat 

14.6 Fifteen Worked Examples 

Additional information

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eBook, Physical Book


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