Royal Navy’s HMS Grimsby to Become First Sandown-class Minehunter Fitted with New Sonar 2093 CSP

Royal Navy’s HMS Grimsby (M108) is selected as the first of seven Sandown-class minehunters to be fitted with an improved version of Sonar 2093 variable depth minehunting sonar.

HMS Grimsby is part of Mine Counter Measures Squadron 1 based at HMNB Clyde, Faslane in Scotland, on the Gare Loch.

According to the contract, called Sonar 2093 Capability Sustainment Programme (CSP), awarded to Thales UK, the company will have the responsibility for the design, manufacture, and fitting of the equipment modification to introduce wideband technology into Sonar 2093 installed on all Royal Navy (RN) Sandown-class minehunters. A first ship fit is planned to complete in 2018, with the full programme to be delivered in 60 months.

The pulse compression technology of the new sonar allows long range detection and classification of new generation low target strength mines.

Sonar 2093 is a multi-frequency variable depth sonar (VDS) system designed to counter the threat of modern mines in both deep and shallow water, and is used by navies worldwide in demanding operational conditions.

2093 VDS is a high resolution mine hunting Sonar System. Wide fields of view and multiple search and classification frequencies ensure that the critical mine hunting parameters of ‘coverage rate’ and ‘speed of advance’ are maximised under all operational conditions.

Thales has successfully evolved the wideband technology from the world renowned 2193 Hull Mounted Sonar. The wideband capability allows the Sonar 2093 to perform the same extensive deep water performance previously only seen in shallow water. It can be offered as a new system or an upgrade for navies around the world.

The introduction of wideband provides improved mine countermeasures in environments where previously performance was unattainable. The pulse compression technology allows long range detection and classification of new generation low target strength mines, by optimising performance against reverberation and noise simultaneously. Wideband transducer arrays also allow maximum performance from the use of the highest bandwidth-time product available.

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