(HMS.L) Hallin Marine Subsea International PLC Buy/Sell

Hallin Marine Subsea International plc
("Hallin Marine" "Hallin" or "the Company")

HALLIN LANDS CASPIAN SEA DEAL `IN EXCESS OF US $20 MILLION'

16 September 2009

Hallin Marine, the AIM quoted provider of subsea solutions to the oil and gas industry, is pleased to announce it has been awarded a five year contract by Dalgidj Private Company ("Dalgidj PC"), for remote operating vehicle (ROV) drilling support services in the Caspian Sea, off the coast of Azerbaijan. The contract is scheduled to commence in late October this year and is in support of BP's drilling programme from fixed platforms in the Caspian Sea. The contract is split into two parts. For the first two years Hallin will provide two of its Quasar Compact ROVs, complete with specialised tooling and operational personnel, to Dalgidj PC, the Azeri company. At the end of two years, Hallin will sell the two ROVs at a price already agreed to Dalgidj PC and continue to give technical and project support from onshore Baku, Azerbaijan for a further three years. The total package of work, including the proceeds from the sale of the ROVs, which at the time of the sale will be five years old, is in excess of US$20 million. As part of the contract Hallin will design and manufacture specialised ROV intervention tooling, utilising the in-house design capabilities of its wholly-owned subsidiaries - Malton based Hallin Robotics Limited and Prospect Flow Solutions Ltd. The board believes this contract enhances Hallin's earnings visibility and is an excellent demonstration of delivering `client solutions' involving the Company's different divisions. Hallin's forward order book, including this contract, now stands at a figure in excess of US$75 million.

Mike Arnold, Hallin West Division's MD, said: "We are pleased to be awarded this contract in support of BP's drilling program and to be working with Dalgidj PC, who are a well established business with a first-class track record. `We have been working closely with all parties since October of last year to ensure we have the best structure to ensure the ultimate success for this project. `Our innovative solution is a win-win for all parties involved and shows how Hallin's ability to respond in a flexible and original way to the client's needs is a significant and clear differentiator. `The contract, involving as it does, other divisions of the Hallin Group, fits well with the Company's aim of supplying clients solutions rather than just contracted services and integrates perfectly with Hallin's stated policy of continually updating its operational fleet of assets.'

Enquiries:

Hallin Marine +44 (0)845 5191156
John Quinn john@scorchedcorporatepr.co.uk

Blomfield Corporate Finance Ltd +44 (0)207 489 4500
Alan MacKenzie/Ben Jeynes ben.jeynes@blomfieldcf.com

Evolution Securities Limited +44 (0)20 7071 4300

Tim Redfern/Robert Collins www.hallinmarine.com Notes to Editors Hallin Marine was formed in 1998 to provide high quality marine and underwater services to the offshore industry, particularly in support of oil & gas development. It has grown from a US$1 million turnover company in its first year to a US$139 million turnover company in 2008. Hallin Marine was admitted to AIM in April 2005 and won the UK's prestigious Business of the Year Award in November 2008. The Company is an experienced provider of subsea construction and inspection solutions. It employs experienced subsea engineering staff to manage projects using: support vessels; saturation diving systems; air/mixed gas diving spreads and Remote Operating Vehicles (ROVs). The Company owns the principal operating assets of diving systems and ROVs. Hallin's expanding operations cover: South East Asia; India; China; Africa; the Middle East; the USA; Russia; Australia and the UK. The Company is divided into four divisions: subsea operations West Division, based in Aberdeen, Scotland; subsea operations East Division, based in Singapore; the Manufacturing Division, also in Singapore where saturation diving systems, air diving systems and ROVs are designed and manufactured; and Prospect Flow Solutions Ltd, the engineering consultancy service to the energy sector with offices in Aberdeen, Derby, Houston and Singapore. A further engineering design centre focusing on robotics is located in the UK at Malton, North Yorkshire. The great majority of the work undertaken by the Group has the oil and gas industry as the ultimate client. Typically the work undertaken by the Group comprises the design, installation, construction, maintenance, repair or survey of equipment required to transport oil and gas from the seabed. Most of the projects are planned well in advance and Hallin's role is that of a key contractor, often working as part of a larger team. The largest projects may take two or more years from decision to go ahead to the stage where Hallin's staff or equipment enters the sea. Hallin provides clients with safe, professional and cost effective solutions by combining innovative approaches and new technology with time proven techniques.