Source: https://tendernation.io/opportunities/01a13cde-5ae2-72ba-9086-0bc1e485bf51/gb-edinburgh-wartsila-4l20-main-engine-spemos-upgrade awarded GB open procedure # GB-Edinburgh: Wartsila 4L20 Main Engine (SPEMOS) Upgrade [Northern Lighthouse Board](https://tendernation.io/buyers/northern-lighthouse-board) Estimated value £205,542 Published 3 Sept 2024 Deadline Closed 12 Aug 2024 ## Who can bid - Buyer says suitable for VCSEs The buyer ticked “suitable for voluntary, community and social enterprises” on the notice. - Open procedure Anyone can submit a full tender; there is no shortlisting stage. [More contracts for small businesses and VCSEs](https://tendernation.io/opportunities/for-small-businesses) ## About this tender 1.2.NLV Pharos currently uses a SPEMOS (SpEed MOnitoring System), which is a proprietary relay system developed for Wartsila (Finland) engines to monitor engine speed, and perform several configurable relay functions. In August 2023, Wartsila issued Technical Bulletin WS23T546, "Lifecycle status announcement, DESPEMES and SPEMOS speed monitoring system" (Annex A), which advised that the SPEMOS system is entering obsolescence. See also Annex B: Technical Bulletin 2011T268, " Temperature monitoring system for balancing shaft bearings on W4L20 and WA4L20". Annex C: Technical Bulletin WS23T644, "Lifecycle status announcement, Woodward 723 and 723 Plus speed control products". NLB requires to protect its vessels from obsolescence, and therefore an upgrade is required to ensure future operability of the SPEMOS system. Wartsila have advised that WSSS (Start/Stop Safety System) addresses the current SPEMOS obsolescence, plus safeguards against future obsolescence & includes the balancing shaft monitoring system for the 4L20's. This upgrade also addresses the Woodward 723 obsolescence highlighted in bulletin WS23T644. ## CPV classification Repair, maintenance and associated services related to aircraft, railways, roads and marine equipment Source Contracts Finder (UK) [View official notice](https://www.contractsfinder.service.gov.uk/notice/46ec5227-2061-437d-a797-f30c57d99ae1) Never miss a tender like this again Get AI summaries, deadline alerts and a bid pipeline for tenders matched to your business. Free to start. [Track tenders free](https://tendernation.io/register) [Buyer profile Northern Lighthouse Board: past awards and live tenders](https://tendernation.io/buyers/northern-lighthouse-board) [Sector More Repair & maintenance services tenders](https://tendernation.io/sectors/repair-maintenance) ## More tenders like this [QW Planned and Reactive Facilities Management Services · Qualifications Wales · 42 days left · 30 Nov 2026](https://tendernation.io/opportunities/01a15552-1c32-72a6-a86e-45f144e2f84b/qw-planned-and-reactive-facilities-management-services) [Provision of Playground Services · Together Housing Association Limited · 26 days left · 13 Nov 2026](https://tendernation.io/opportunities/01a154e4-48d5-7218-a766-82a2175c6300/provision-of-playground-services) [ESTH - Lift Maintenance PPM & Reactive · Epsom and St Helier University Hospitals NHS Trust · 30 days left · 18 Nov 2026](https://tendernation.io/opportunities/01a15476-6399-72fd-bd84-a9ca0f25a632/esth-lift-maintenance-ppm-reactive) [Gas Boiler Services · Maidstone and Tunbridge Wells NHS Trust · 28 days left · 16 Nov 2026](https://tendernation.io/opportunities/01a15408-a8ed-726c-bb19-21f575ae5ba0/gas-boiler-services) [Repair and maintenance services – Calamiteitenwerkzaamheden rioolwaterpersleidingen · Waterschap Noorderzijlvest · 49 days left · 7 Dec 2026](https://tendernation.io/opportunities/01a15183-754c-70bf-bff4-46d38ff6fb78/netherlands-repair-and-maintenance-services-calamiteitenwerkzaamheden-rioolw) [Repair and maintenance services of personal computers – Абонаментно и сервизно обслужване на офис техника : компютри, преносими компютри, принтери, скенери, копирни машини, монитори, UPS устройства, модеми, рутери и др., включително доставка на резервни части, материали и консумативи за офис техниката за срок от 12 месеца · ТЕРИТОРИАЛНО ПОДЕЛЕНИЕ "ДЪРЖАВНО ГОРСКО СТОПАНСТВО - КАЗАНЛЪК" · 28 days left · 16 Nov 2026](https://tendernation.io/opportunities/01a15183-c01a-72fa-943e-551c1508bed2/bulgaria-repair-and-maintenance-services-of-personal-computers-abonamentno-i)