Designing and Building Single Point Mooring Systems

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The MONOBUOY company was set up in 1998 to provide multi-disciplined engineering, project management and construction services to oil and gas companies throughout the world.

Our staff has accumulated well over 50 years experience in the fields of offshore offloading terminals.

We design, build and install CALM Buoys, FSO's and FPSO's.

We also overhaul CALM buoys and often have used refurbished buoys for sale.

In addition we support terminal operators by supplying spare parts, engineering and consultancy services.

Company Overview

6 - 9 May 2019,
 meet us at OTC in our booth 1739-B,
at the British Pavilion, NRG Park, Houston, Texas, USA
1 June 2017

Monobuoy moved to a new location in a purpose-build office in the center of Monte-Carlo.

The new address:

1 rue de Genets, Le Millefiori

Monaco, 98000

Our phone numbers remain the same.

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12 June  2017

At the end of March 2017 Monobuoy has been awarded a contract from Indian Oil Corporation Ltd to provide the replacement 12 metre diameter turntable CALM Buoy for their Vadinar Terminal. This buoy is designed to be operated for 30 years without the need for dry-docking. It will incorporate an extensive telemetry package. We are pleased to have secured the  confidence of yet another major oil Company and we look forward to delivering this buoy early next year.






5  July 2017

In April 2017 we were awarded the contract by Shell Oman Marketing Company to design, fabricate and install a 12 meter CALM buoy. This is the fourth buoy that Monobuoy supplied worldwide that will have a Thermal Aluminium Sprayed (TSA) anti-corrosion coating. The buoy will come with full Telemetry equipment package and improved design of the chainstoppers. Delivery and installation of the buoy will take 9 months.






1 August 2017

Monobuoy was awarded the fabrication of a new build CALM Buoy (Turret type) to replace the existing system for a refinery at the Bay of Fundy in Canada





3-5 October 2017 
Cartagena, Columbia

Monobuoy took pat in XIII Jornada organised by SLOM.  

Our engineer Mr. Couture presented a technical paper on the subject "Tanker Yawing at Monobuoys and Suggested Pull-back Tug Operations"




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20 October 2017

Monobuoy completed the installation of the 2 CALM Buoys for WAHA Oil, Libya which were delivered to the client in 2015




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7 December 2017
CALM Buoy for Shell Oman Marketing Company completed in under 8 months from contract award. Buoy now ready for heavy lift transport and installation.




15 December 2017
12 m CALM Buoy for sale with 3 path product swivel,
8 chainstoppers and  with the loading capacity of 250,000 t (built 1974)
Turntable Buoy designed by Single Buoy Mooring of Monaco. Decommissioning planned for Jan 2018.
For more information on the CALM buoy follow the link to our Product Page
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20 January 2018
The installation of a 12 m CALM Buoy for Shell Oman Marketing was completed on 20th January 2018. 
Monobuoy has been awarded Certificate of Recognition for the successful completion and delivery of the SPM. 
12 March 2018
The fabrication of the 12 m CALM Buoy for IOCL completed and its offloading was successfully performed at the end of February.
The installation  of the Buoy is in progress offshore Vadinar in the Gulf of Kutch, Gujarat, India
11 June 2018
The fabrication of the Turret Type Buoy is in its final construction stage and planned for completion beginning of August.
20 June 2018
The installation of turret on hull completed and rotation test done.
18 July 2018
The latest photo of Turret Type Buoy from the Construction Yard
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1 July 2018
Please note our United Kingdom Office address has changed. The new address is:
50-54 Oswald Road, Scunthorpe,
England, DN15 7PQ
15 August 2018
The buoy has been loaded out on the heavy lift vessel in Dubai. 
Monobuoy office and agents
10 September 2018
The buoy has arrived at destination in Canada and has been offloaded. 
3-5 October 2018
Quito, Ecuador
Monobuoy took part in XIV Jornada organised by SLOM. 
Our engineer Mr. Sandeman presented a technical paper on the subject "A fully-loaded CALM Buoy' our new Turret buoy project recently delivered to the client.
26 November 2018

The turret buoy has been successfully installed, commissioned and put into operation in Canada.
The first tanker was successfully offloaded on 29th October 2018.
31 December 2018

Monobuoy is very proud to have one of our Dubai based engineers take some time off and compete in the Monaco-Dakar rally raid which started on 30th December 2018 in Monaco. Be fast, be safe.
Thank you to his sponsors, EPC Solutions, Amazon Filters, The Lost Distillary and Monobuoy for helping him fulfill his dream. We all wish him the best of luck and pray he will finish safely.
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17 January 2019

Monobuoy is happy to announce that our engineer who took part in Monaco-Dakar successfully finished the race and he is 11th overall in the bikes class and 9th overall for his class of bike (<450cc engine size). He was also the first British rider to finish. Well done, great results for the first time participant!
25 January 2019
Monobuoy Video Gallery page is online and you can subscribe to our You tube channel to follow our latest videos. To open the page visit Gallery or click below the
14 March 2019
Monobuoy took part in the "Pipelines Technical Seminar" organized by the Indian Oil Corporation in New Delhi during 5 - 6th March 2019. Our technical director David Collard was one of the speakers and presented two technical papers.