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There have been three great moments in my life as an inventor. One when my early wireless signals rang a bell at the other side of the room in which I was carrying out my experiment; the second when the signals from my station at Poldhu in Cornwall found response in the telephone receiver I was holding to my ear at St. John's, Newfoundland, 1,800 miles away over the Atlantic; and today when I quietly contemplate the possibilities of the future and feel that my life's work has provided a sure foundation on which the workers of today and tomorrow may build. 

[Guglielmo Marconi - December 1935] - Fondazione Guglielmo Marconi (

SIRM's history is rooted in an unbreakable bond to the invention of Radio and its inventor Guglielmo Marconi. Founded by Guglielmo Marconi in April 1900 (25th April 1900)  as The Marconi International Marine Communications Company Limited, we are now known as SIRM UK Branch, a UK establishment of SIRM - SOCIETA' ITALIANA RADIO MARITTIMA S.P.A., after the acquisition in 2016 from SELEX ES Ltd.  
SIRM (Italian Company for Radio Communications) was founded in 1927, again by Guglielmo Marconi, to manage the activities in Italy, following the publication of law No. 1082 of the 06/16/1927 for the discipline of maritime communications.The acquisition of the marine business in UK leads to the merging of two companies, which since the invention of the radio, over 100 years ago, represented a technological reference point for the maritime market.
SIRM UK Marine Ltd. is the only organisation anywhere in the world that has been continuously involved in the provision, implementation, monitoring and support of ships' radio installations since the very inception of marine radio. In the formative years, at the turn of the century, the sea-going equipment provided was exclusively concerned with wireless communications, but over the years the service has enlarged to include such device as automatic distress call alarms, special lifeboat equipment, direction-finders (manual and automatic), echo meters for various purposes, marine radar, sound systems for intercommunication and public address work. For this reason in 1968 the company name was changed by dropping the word "Communication", to reflect the fact that the products offered to the Marine marketwere not adequately described by the original title.


    • 1902 - Marconi pioneers transatlantic wireless telegraphy. During February 1902, he succeeds in receiving signals on board the SS Philadelphia at a range of 3,400 km, proving that medium- and long-wave transmissions can far exceed line-of- sight distances. Later in the same year he transmits the radio message from North America. In 1907, Marconi launches a radio-telegraph service for ships in the Atlantic.
    • 1912 - On 15th April, the RMS Titanic sinks in the North Atlantic Ocean. On board are two employees of MIMCL as radio operators. They succeed in contacting the radio station from which the first transatlantic message was sent, which was instrumental in the ensuing recovery of survivors. 
    • 1937 - Marconi's death is marked by two minutes radio silence
    • 40s - Various technology improvements, including the invention of quartz oscillators. Following the war, Marconi Marine launches the Radiolocator 1 and 2 – the first mercantile marine radar that becomes the mainstay of the company 
    • 1957 -  VHF becomes the dominant radio band through the decade, with Marconi leading the development. In 1957 the Hague International Convention makes recommendations about VHF and Marconi's Nautilus range is well positioned to benefit. In 1958 Marconi's new floating lab (Elettra II) is issued with the first licence authorizing the use of VHF for public correspondence.
    • 70s -  Launch of family of marine MF/HF transmitters including Crusader, Conqueror, Commandant, Commander and Challenger.
    • 90s -  Satcom market continues to develop. Marconi Marine launches OrCades Inmarsat C equipment with the US supplier Trimble.
    • 2000s -  Movement towards distributorship over own product development. Win several awards from JRC for sales achievements. Marine business acquires Broadgate Voyage Data Recorder business from P&O
    • 2002 -  Finmeccanica acquires Marconi's communications business including Marconi Marine and the moved the business in SELEX Communication and later in SELEX ES
    • 2016 - SIRM bought the marine business from SELEX ES Ltd. with the aim of creating a center of excellence for the sector with a European dimension


The ignition lights day in Sydney, by Guglielmo Marconi in his radio cabin aboard the Elettra, March 26, 1930.

Radio equipment in the cabin yacht "Elettra"

Marconi with a group of journalists aboard the Elettra

One of the cabins of "the Elettra"


Fiume, D'annunzio and Marconi aboard the Elettra

 marconi 1917 

1917 - Paper Advertising of Marconi Marine products 


1951 - Paper Advertising of Marconi Marine RADIOLOCATOR