BOI Group Sectors Projects Fleet Careers Supplier portal Contact
BOIBantry Offshore Infrastructure
Port, marine & offshore

We build and run the infrastructure ships come to

Quay walls, berths, dredging and offshore support across the Irish and Celtic seas. Thirty years of marine civils, delivered on tidal windows that do not move.

Registered in Ireland · ISO 9001, 14001 and 45001 certified · Safe-T-Cert accredited

ISO 45001Occupational health & safety
Own plantDredgers, cranes, barges
Irish & UK watersLicensed in both jurisdictions
24-hour operationsTidal and weather windows

Six things we do, and do properly

We self-perform the marine work rather than subcontracting the difficult half of it. That is why our programmes hold their dates.

Quay & berth construction

Combined walls, tubular piles, capping beams and fendering. New berths, and strengthening of existing quay walls to take heavier vessels.

Dredging & disposal

Capital and maintenance dredging, bed levelling and licensed disposal at sea. Survey, consent and disposal all handled in-house.

Freight & stevedoring

Bulk, breakbulk and project cargo. Quay cranes to 120t, 14 hectares of hardstanding, bonded warehousing and rail sidings.

Offshore wind support

Construction and O&M bases, marshalling yards, monopile handling and crew transfer berths for the Irish Sea arrays.

Marine survey

Multibeam bathymetry, side-scan, sub-bottom profiling and geotechnical boreholes. Our own survey vessel, mobilised on request.

Terminal operations

We run terminals, not just build them. Gate, weighbridge, vessel planning and line handling under a single operating contract.

38
Berths under management
2.4m
Tonnes handled each year
30 yrs
Working in Irish and UK waters
0.41
RIDDOR-reportable rate, per 100 staff

Marine work is decided by the tide, so we plan backwards from it

Every programme is built around the windows the sea allows. That means we sequence the work, not the paperwork.

  1. Survey and consent first

    Hydrographic survey, ground investigation and benthic sampling up front, so the design is built on what is actually on the seabed.

  2. Fabricate off-site

    Piles, precast units and steelwork are fabricated in our own yard. Time on the water is the expensive part, so we spend as little of it as possible.

  3. Install on the window

    Plant is mobilised for the tidal window and demobilised when it closes. Weather standby is forecast, costed and reported openly.

Safety, licensing and the environment

Working on and over water removes the margin for improvisation. The controls below are conditions of us taking the job.

  • Safe-T-Cert accredited — audited annually, with a published incident rate.
  • Foreshore and marine licences — held and maintained in both jurisdictions.
  • Dredge material testing — every disposal is characterised and consented before it moves.
  • Marine mammal observers on every piling and dredging spread.

Current and recent work

  • Bantry Terminal, Berth 5
    Quay extension and 120t crane rail · 2024–2026
  • Celtic Sea Array O&M base
    Marshalling yard and crew transfer berths · 2023–2025
  • Shannon Estuary maintenance dredge
    410,000 m³ capital and maintenance · annual
  • Rosslare channel deepening
    Approach channel to −9.5m CD · 2022

Common questions

What size projects do you take on?

Typically between €2m and €80m of marine and port works, as principal contractor. We also take framework maintenance dredging and terminal operations contracts that run for several years. Below that range we will usually point you at a specialist who can do it better than we can.

Do you own your own plant?

Yes. Two backhoe dredgers, a cutter suction dredger, 180t and 120t crawler cranes, spud-leg barges, a survey vessel and our own piling spreads. Owning the plant is what allows us to commit to a tidal window instead of hoping a subcontractor is free.

How do you handle weather delays?

Weather and tidal standby are forecast, measured and reported weekly against the programme. We carry a weather window allowance in the price rather than treating it as a variation, and we publish the actual downtime so the client can see where the time went.

Which jurisdictions do you work in?

Ireland and the United Kingdom, including Northern Ireland. We hold foreshore leases, marine licences and waste facility permits in both jurisdictions, and we are registered for VAT and construction industry schemes on both sides.

Can you operate a terminal as well as build it?

Yes, and about a third of our revenue comes from operations rather than construction. We run gate, weighbridge, vessel planning, line handling and stevedoring under a single contract, which is often what a port authority actually needs.

How do I raise a tender or a supplier query?

Commercial enquiries go to our projects team through the contact page. Existing suppliers should use the supplier portal for purchase orders, delivery notes and invoice submission. New suppliers can register on the same portal and we will review the submission within ten working days.

Have a marine or port scheme that needs a contractor who owns the plant?

Send us the scope and the tidal constraints. We will tell you honestly whether we are the right fit.

Contact the projects team Download capability statement