The Lake Lothing (Lowestoft) Third Crossing Order 201[*]
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Lake Lothing Third Crossing Preliminary Navigation Risk Assessment Document Reference: 6.7 The Lake Lothing (Lowestoft) Third Crossing Order 201[*] _________________________________________________________________________ _________________________________________________________________________ Document 6.7: Preliminary Navigation Risk Assessment _________________________________________________________________________ Planning Act 2008 Infrastructure Planning The Infrastructure Planning (Applications: Prescribed Forms and Procedure) Regulations 2009 Regulation Number: 5(2)(a) PINS Reference Number: TR010023 Author: Suffolk County Council Document Reference: 6.7 Date: June 2018 Lake Lothing Third Crossing Preliminary Navigation Risk Assessment Document Reference: 6.7 --------------------------------------------------------------------------------------------------------------------------- Foreword This Preliminary Navigation Risk Assessment relates to an application ('the Application') submitted by Suffolk County Council ('the Council' / 'the Applicant') to the Secretary of State (through the Planning Inspectorate) for a Development Consent Order ('DCO') under the Planning Act 2008. If made by the Secretary of State, the DCO would grant development consent for the Applicant to construct, operate and maintain a new bascule bridge highway crossing, which would link the areas north and south of Lake Lothing in Lowestoft, and which is referred to in the Application as the Lake Lothing Third Crossing (or 'the Scheme'). 1069948-WSP-MAR-LL-RP-MA-0008 i © WSP 2018 Lake Lothing Third Crossing Preliminary Navigation Risk Assessment Document Reference: 6.7 --------------------------------------------------------------------------------------------------------------------------- CONTENTS PAGE No. Foreword ...................................................................................................................... i Tables ......................................................................................................................... iv Figures ......................................................................................................................... v Abbreviations ............................................................................................................. vi 1 Introduction ........................................................................................................ 1 1.1 Scope of the Assessments ................................................................................... 1 1.2 Objectives ............................................................................................................ 1 2 Project Description ............................................................................................ 2 2.1 Overview .............................................................................................................. 2 2.2 Location of Scheme ............................................................................................. 2 2.3 Bridge Design ...................................................................................................... 2 2.4 Port Operations .................................................................................................... 3 3 Methodology ...................................................................................................... 4 3.1 Assessment Process ........................................................................................... 4 3.2 Consultation ......................................................................................................... 4 3.3 Guidance and References ................................................................................... 5 3.4 Data Gathering .................................................................................................... 5 4 Hazard Identification .......................................................................................... 6 4.1 General ................................................................................................................ 6 4.2 Collision ............................................................................................................... 6 4.3 Contact ................................................................................................................ 6 4.4 Grounding ............................................................................................................ 6 4.5 Major Cause of Hazards ...................................................................................... 6 4.6 Incident Frequencies ............................................................................................ 8 5 Existing Operational Measures ......................................................................... 9 5.1 Navigation Control ............................................................................................... 9 5.2 Vessel Control ................................................................................................... 10 1069948-WSP-MAR-LL-RP-MA-0008 ii © WSP 2018 Lake Lothing Third Crossing Preliminary Navigation Risk Assessment Document Reference: 6.7 --------------------------------------------------------------------------------------------------------------------------- 5.3 Bridge Control .................................................................................................... 10 5.4 Depth Control ..................................................................................................... 10 6 Risk Assessment ............................................................................................. 11 6.1 Scope of the Assessments ................................................................................. 11 7 Additional Mitigation Measures ...................................................................... 13 7.1 Planning and Design Phase ............................................................................... 13 7.2 Construction Phase ............................................................................................ 13 7.3 Operation Phase ................................................................................................ 14 Appendix A – Preliminary NRA ................................................................................ 15 Appendix B – Vessel Survey Report ........................................................................ 16 1069948-WSP-MAR-LL-RP-MA-0008 iii © WSP 2018 Lake Lothing Third Crossing Preliminary Navigation Risk Assessment Document Reference: 6.7 --------------------------------------------------------------------------------------------------------------------------- Tables Table 6.1 - Risk Matrix ........................................................................................................ 11 1069948-WSP-MAR-LL-RP-MA-0008 iv © WSP 2018 Lake Lothing Third Crossing Preliminary Navigation Risk Assessment Document Reference: 6.7 --------------------------------------------------------------------------------------------------------------------------- Figures Figure 2.1 - New Bridge Location .......................................................................................... 2 Figure 2.2 - Bridge outline (looking west) .............................................................................. 3 1069948-WSP-MAR-LL-RP-MA-0008 v © WSP 2018 Lake Lothing Third Crossing Preliminary Navigation Risk Assessment Document Reference: 6.7 --------------------------------------------------------------------------------------------------------------------------- Abbreviations COLREGs International Regulations for Prevention of Collision at Sea, 1972 DCO Development Consent Order DfT Department for Transport GLA General Lighthouse Authority IALA The International Association of Marine Aids to Navigation and Lighthouse Authorities LPS Local Port Service MAIB Marine Accident Investigation Branch MCA Maritime and Coastguard Agency MGN Marine Guidance Note NRA Navigation Risk Assessment SHA Statutory Harbour Authority 1069948-WSP-MAR-LL-RP-MA-0008 vi © WSP 2018 Lake Lothing Third Crossing Preliminary Navigation Risk Assessment Document Reference: 6.7 --------------------------------------------------------------------------------------------------------------------------- 1 Introduction 1.1 Scope of the Assessments 1.1.1 This report sets out the preliminary Navigation Risk Assessment (NRA) based on the reference design brought forward for DCO application. It covers both the construction and operational phases of the Scheme. Any subsequent changes to the bridge design or construction methodology will need to be considered and the Risk Assessment amended accordingly. 1.2 Objectives 1.2.1 The objectives of the preliminary NRA were to establish; · The hazards to navigation created by the presence of the scheme bascule bridge · The existing control and mitigation measures in place within the Port · The risk levels associated with the identified hazards · Any additional control or mitigation measures that are required to ensure the risks are “as low as reasonably practicable”. 1069948-WSP-MAR-LL-RP-MA-0008 1 © WSP 2018 Lake Lothing Third Crossing Preliminary Navigation Risk Assessment Document Reference: 6.7 --------------------------------------------------------------------------------------------------------------------------- 2 Project Description 2.1 Overview 2.1.1 Lowestoft is a port town on the east coast of England, in the