Planning

Ask AI about this notice

Summarise, research or assess it with AI

View Markdown

Share this notice

Send this contract to a colleague

CM70 - Trinity House Hydrographic and Bathymetric-Topographic Surveys

Trinity House

This public procurement record has 1 release in its history.

Planning

25 Aug 2026 at 13:59

UK2 - Preliminary Market Engagement Notice
Summary of the contracting process

Trinity House intends to procure hydrographic and bathymetric-topographic surveying services through a framework for up to four years. The work will support regular surveys around the coasts of England and Wales, including surveys within defined boundaries, potential boundary extensions, and ad-hoc surveys of wrecks or dangers to navigation. It will also cover the areas around more than 60 lighthouses in England, Wales, the Channel Islands and Gibraltar, including intertidal and inaccessible areas requiring topographic surveying. Suppliers will provide complete survey datasets for sharing with the United Kingdom Hydrographic Office, together with .csar and .hob files and a detailed survey report. The main category is surveying and related technical services, including topographical and bathymetric surveys.

This procurement is at the planning stage: Trinity House has announced its intention to procure but has not invited tenders. The expected approach is a framework agreement, with an anticipated contract period from 1 February 2027 to 31 January 2029 and a possible extension until 31 December 2030. The estimated value is £374,535 excluding VAT, or £449,442 including VAT. The procurement is above the applicable threshold and is planned as one lot. Trinity House expects interested suppliers to provide their details for a register and receive further procurement information, with this engagement planned by 30 October 2026. The framework is intended to support repeated survey requirements and allows renewal.

The work will suit specialist hydrographic, bathymetric and topographic survey companies able to operate around coastal, intertidal and lighthouse locations, including challenging or inaccessible sites. Suppliers should be able to deliver full multibeam bathymetric coverage, survey changing boundaries and investigate new wrecks or navigational dangers. Technical capability should include collecting and processing data, ideally in Caris, and supplying .csar and .hob files alongside detailed survey reports. The required standard is the latest International Hydrographic Organization S-44 Special Order, with 100% coverage, 2-metre total horizontal uncertainty and total vertical uncertainty of 0.25 metres plus 0.0075% of water depth. Existing capability at IHO Order 1a, or Order 1b in shallow water, will be relevant.

How relevant is this notice?

Notice Information

Notice Title

CM70 - Trinity House Hydrographic and Bathymetric-Topographic Surveys

Notice Description

Trinity House has a requirement to conduct a number of Hydrographic and Bathymetric/Topographic surveys at regular intervals. The purpose of the upcoming tender is to put in place a framework lasting a maximum of four years consisting of innovative survey companies to carry out surveys around the coasts of England and Wales. Hydrographic surveys required: Hydrographic surveys to be completed within pre-set boundaries. A potential need for these boundaries to be expanded due to significant changes whilst surveying will also need to be taken into consideration. Trinity House will require the entire data set to be submitted as we share this with the United Kingdom Hydrographic Office. Ideally the survey data will be collected in Caris. Alongside the dataset, we require .csar .hob files and a detailed Report of Survey. Survey Quality: TH currently collect data to IHO Order 2 as a minimum, however tenders should aim to achieve a better standard. Surveys should capture 100% bathymetric coverage and should be multibeam bathymetry to IHO Order 1a, with our shallow water surveys being surveyed to IHO Order 1b. The MCA have a useful link to help show what is involved in order to collect the data to those standards: UK Civil Hydrography Programme (CHP) - GOV.UK. The scope will also include the ad-hoc survey of new wrecks or dangers to navigation. Bathymetric - Topographic surveys required: Trinity House holds the operation and maintenance responsibility for over 60 lighthouses around England, Wales, the Channel Islands and Gibraltar. These critical aids-to-navigation include several rock tower lighthouses that require regular modernisation and ongoing maintenance. To support this work, it is important to have accurate bathymetric and topographic surveys of the surrounding area(s). Topographic surveys are required to capture levels within the intertidal zone and areas that are inaccessible for bathymetric techniques. Survey Quality: Acquired data must comply with the latest edition of the International Hydrographic Organization (IHO) s-44 special order, standard. This standard specifies total horizontal uncertainty (THU) horizontal accuracy of 2m and total vertical uncertainty (TVU) of 0.25 m plus 0.0075% of water depth. 100% coverage of the survey areas is required. For more information about this opportunity, please visit the eSourcing portal at: https://trinityhouse.delta-esourcing.com/tenders/UK-UK-LONDON:-Surveying%2C-hydrographic%2C-oceanographic-and-hydrological-instruments-and-appliances./S8G6TAPN94 To respond to this opportunity, please click here: https://trinityhouse.delta-esourcing.com/respond/S8G6TAPN94

Planning Information

The intention of this notice is for interested parties to submit their details to Trinity House to be invited to the procurement process and further information which may become available. Please can interested suppliers therefore send their email addresses to etender@trinityhouse.co.uk to be added to a register of interested suppliers.

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-06eb9b
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/080867-2026
Current Stage
Planning
All Stages
Planning

Procurement Classification

Notice Type
UK2 - Preliminary Market Engagement Notice
Procurement Type
Framework
Procurement Category
Services
Procurement Method
Not Specified
Procurement Method Details
Not specified
Tender Suitability
Not specified
Awardee Scale
Not specified

Common Procurement Vocabulary (CPV)

CPV Divisions

38 - Laboratory, optical and precision equipments (excl. glasses)

71 - Architectural, construction, engineering and inspection services

CPV Codes

38290000 - Surveying, hydrographic, oceanographic and hydrological instruments and appliances

71351810 - Topographical services

71351923 - Bathymetric surveys services

Notice Value(s)

Tender Value
£374,535 £100K-£500K
Lots Value
Not specified
Awards Value
Not specified
Contracts Value
Not specified

Notice Dates

Publication Date
25 Aug 2026Yesterday
Submission Deadline
Not specified
Future Notice Date
30 Oct 20263 months to go
Award Date
Not specified
Contract Period
1 Feb 2027 - 31 Jan 2029 2-3 years
Recurrence
Not specified

Notice Status

Tender Status
Planning
Lots Status
Planning
Awards Status
Not Specified
Contracts Status
Not Specified

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
Trinity House
Contact Name
Available with D3 Tenders Premium →
Contact Email
Available with D3 Tenders Premium →
Contact Phone
Available with D3 Tenders Premium →

Buyer Location

Locality
LONDON
Postcode
EC3N 4DH
Postcode Area
Central London
Country
England
Major Region (ITL 1)
TLI London
Basic Region (ITL 2)
TLI3 Inner London - West
Small Region (ITL 3)
TLI35 Westminster and City of London
Delivery Location
Not specified
Local Authority
City of London
Electoral Ward
Tower
Westminster Constituency
Cities of London and Westminster

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

View full OCDS Record for this contracting process

JSON Markdown

The Open Contracting Data Standard (OCDS) is a framework designed to increase transparency and access to public procurement data in the public sector. It is widely used by governments and organisations worldwide to report on procurement processes and contracts.

Loading OCDS record...