Toll-Free+1 (877) 999-3321

  • Wishlist (0)
product_type Book

ECDIS Safety Settings and UKC Management, 2020 Edition

  • $42.95

  • $37.95

Add to Wishlist

Media Hardcopy
SKU 9781856099240
Publisher Witherby Seamanship International
ISBN 9781856099240

This booklet aims to provide a deeper insight into the principal ECDIS safety settings and provide guidance to ensure they are understood by the ECDIS operator. It explains how under keel clearance (UKC) should be calculated and effectively managed by the navigator.

Correct safety settings and adequate UKC is essential for safe navigation. However, as marine accidents and inspections show, ECDIS safety settings and UKC management is often misunderstood.

The booklet provides a deep insight to clarify the principal ECDIS safety settings and provides guidance to ensure they are understood by the ECDIS operator to maintain safe navigation. It explains how UKC should be calculated and effectively managed on board ships.

The guidance covers topics such as:

  • Safety Depth

  • Safety Contour

  • Display Settings

  • Isolated Dangers

  • Squat

  • Tidal heights

  • UKC calculations.

Worked examples are included across a variety of scenarios to help illustrate best practice.

The booklet is intended to provide guidance for Masters, Officers, ECDIS operators and ship superintendents to ensure the ECDIS is used to its best extent on board to contribute towards safe navigation.


1 ECDIS Safety Settings

1.1 Introduction

1.2 ECDIS Alerts

1.3 Chart Accuracy and Data Quality

1.4 ECDIS Display Settings

1.4.1 Display Base

1.4.2 Standard Display

1.4.3 All Other

1.4.4 Custom Display

1.4.5 Further ENC Settings

1.5 Safety Contour

1.6 Safety Depth

1.7 Shallow Contour and Deep Contour

What are the Shallow and Deep Contours?

1.8 Isolated Dangers

What are Isolated Dangers?

1.9 UKC Management

1.9.1 UKC Considerations

1.9.2 Squat

1.9.3 Height of Tide (HoT)

1.9.4 UKC Calculations Vertical Clearance

1.9.5 UKC Management Plan Authorities with Minimum UKC Requirements S-129 and UKC Management Service Providers

1.9.6 Passage Planning Passage Planning Calculation Example

1.9.7 UKC Monitoring

1.10 Detection Area

1.11 Route Check – Safety Corridor Settings

1.12 Summary

2 Safety Contour – Worked Examples

2.1 Safety Contour – Worked Examples

Scenario 1 – Product Tanker

Scenario 2 – VLCC Loaded

Scenario 2a – VLCC with Changes to Calculation

Scenario 3 – Tug

Scenario 4 – Passenger Ship

Scenario 5 – LNG Carrier

Scenario 6 – Bulk Carrier

2.2 Safety Settings – Summary  

Further Guidance              


Title: ECDIS Safety Settings and UKC Management
Number of Pages: 64
Product Code: WS1748K
ISBN: ISBN 13: 978-1-85609-924-0 (9781856099240), ISBN 10: 1-85609-924-5 (1856099245)
Published Date: July 2020
Book Height: 297 mm
Book Width: 211 mm
Book Spine: 5 mm
Weight: 0.50 kg

Related products