---
title: "Subsea Survey Services"
ocid: "ocds-h6vhtk-050dcc"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-050dcc"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-050dcc.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-050dcc.json"
source: "Find A Tender Service"
current_stage: "Award"
buyer: "INTERCONNECTOR SERVICES (NI) LIMITED"
published: "2025-09-29"
---

# Subsea Survey Services

Buyer: INTERCONNECTOR SERVICES (NI) LIMITED  
Current stage: Award  
OCID: ocds-h6vhtk-050dcc

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[Download OCDS JSON](https://d3tenders.com/contract/ocds-h6vhtk-050dcc.json)

## Summary

The procurement process for "Subsea Survey Services" was initiated by Interconnector Services (NI) Limited, part of the Mutual Energy group, which serves as the buying organisation. This tender falls under the marine survey services industry category, with a focus on pipeline-inspection services. The process was conducted within the United Kingdom, specifically under the Northern Irish devolved regulations. It involved an open competitive flexible procedure that included initial pre-qualification, a tender submission stage, and a Best and Final Offer (BAFO). The award stage is currently pending, with an anticipated standstill period ending on 8th October 2025, and the contract scheduled to start on 1st November 2025 and end on 31st December 2026. The process has been marked complete with a gross value of £3,000,000.

This tender represents a significant business opportunity for companies specialising in marine and underwater services, particularly those with expertise in geophysical and geotechnical data collection and analysis. The open procurement method allows a diverse range of suppliers to participate, potentially fostering competition and innovation in the delivery of high-quality survey results. Businesses with the capacity to provide state-of-the-art equipment and methodologies for subsea surveying will find this tender particularly suited to their growth ambitions. N-Sea, a large-scale supplier, has been identified as the prospective service provider, demonstrating that established companies with a strong track record in marine services would be well-positioned to thrive within this competitive tendering environment.

## Notice

Interconnector Services Limited, part of the Mutual Energy group has tendered for a contract for the provision of marine survey services. The tender process consisted of an initial prequalification stage, followed by a second tender submission stage and BAFO.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/060517-2025 |
| Notice type | UK6 - Contract Award Notice |
| Procurement type | Standard |
| Procurement category | Services |
| Procurement method | Open |
| Procurement method details | Competitive flexible procedure |
| Tender suitability | Not specified |
| Awardee scale | Large |
| All stages | Tender, Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 29 Sep 2025 |
| Submission deadline | 2 Jun 2025 |
| Future notice date | Not specified |
| Award date | 25 Sep 2025 |
| Contract period | 1 Nov 2025 - 31 Dec 2026 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £1,499,999 |
| Lots value | £1,499,999 |
| Awards value | £3,000,000 |
| Contracts value | Not specified |

## Status

| Field | Value |
| --- | --- |
| Tender status | Complete |
| Lots status | Complete |
| Awards status | Pending |
| Contracts status | Not specified |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | INTERCONNECTOR SERVICES (NI) LIMITED |
| Locality | 85 ORMEAU ROAD |
| Post town | Northern Ireland |
| Postcode | BT7 1SH |
| Country | Northern Ireland |
| ITL 1 | TLN Northern Ireland |
| ITL 2 | TLN0 Northern Ireland |
| ITL 3 | TLN06 Belfast |
| Local authority | Belfast |
| Electoral ward | Central |
| Westminster constituency | Belfast South and Mid Down |
| Delivery location | TLN Northern Ireland |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | N-SEA |

## CPV Codes

### Divisions

- 71 - Architectural, construction, engineering and inspection services
- 76 - Services related to the oil and gas industry

### Codes

- 71354500 - Marine survey services
- 76600000 - Pipeline-inspection services

## Release History

- 29 Sep 2025 at 13:00 - Award - UK6 - Contract Award Notice - https://www.find-tender.service.gov.uk/Notice/060517-2025
- 7 May 2025 at 12:28 - Tender - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/019370-2025

## Documents

- https://www.find-tender.service.gov.uk/Notice/060517-2025
  29th September 2025 - Contract award notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/019370-2025
  7th May 2025 - Tender notice on Find a Tender
- https://in-tendhost.co.uk/mutual-energy/aspx/Home
  All interested suppliers should register on our tender portal - https://in-tendhost.co.uk/mutual-energy/aspx/Home where the tender documents can be downloaded

## Notice URLs

- https://in-tendhost.co.uk/mutual-energy/aspx/Home-pleaseregisteranddownloadthetenderdocuments
- https://www.legislation.gov.uk/ukpga/2023/54/contents

## Provenance

This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-h6vhtk-050dcc. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-050dcc.json.