NIMROD - Underwater Navigation & Sonar System

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NIMROD (the seeker) is a modular diver hand-held sonar & navigation console designed to aid divers. The system combines a forward looking single beam sonar, GPS receiver, mission planning, digital compass, depth reading, clock/stopwatch, gyroscope and the capability to be used with an optional DVL (Doppler-Velocity-Log). Locate items underwater and navigate between waypoints without the need to surface.  Who uses NIMROD?Military EOD teams, combat swimmers, navy mine clearance divers,...

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  • Case dimensions: 170mm(L) x 195mm(W) x 80mm(H)
  • Dimension over handles length: 170mm plus sonar module
  • Weight 3kg in air, less than 0.8kg in water (inc battery)
  • Weight (with GPS under frame) 3.5kg in air, 1kg in water (inc battery)
  • Construction: machined from solid aluminium plate ACP 5080 - fine grain structure and low porosity
  • Connectors: 3x Lemo high pressure connectors W Series (one for sonar, one for GPS and one for DVL)
  • Operating & storage temperature: -10°C to +35°C
  • Operating depth: 100msw
  • Handle system: can be adjusted to suit the user
  • Power supply: 14.8V DC nominal from internal battery pack
  • 5 Inch Colour Liquid Crystal Display: excellent viewing angles between 30° and 60°
  • Data storage & logging: internal 16Gb flash memory - data Logging capacity (assuming approx 2Mb per minute) > 100hrs on internal storage
  • Integrated sensors: depth pressure sensor - attitude and heading reference system (comprising pitch and roll, digitally gimballed electronic magnetic compass and rotational rate gyros) - battery voltage level indicator
  • User interface: 5 solid-state piezo button interface for menu navigation and parameter control
  • Bluetooth Connection: the console connects to the host PC via Bluetooth - this removes the need for any connection between the two for downloading a mission or uploading a dive log (password protected)
  • NIMROD battery: configuration 22V, 4.2Ah capacity - chemistry rechargeable Li-Ion
  • Battery operating time: 6 hours minimum (with sonar and GPS connected) from a charged state
  • Battery charging time: up to 7 hrs from a fully discharged state
  • Battery charging temperature: 10°C to +30°C
  • Battery storage temperature: -10°C to +35°C
  • Battery safety: integrated thermal (94°C) fuse and electrical (5A) fuse
  • Battery life indicator: 6-bar graduating mobile phone type
  • A data sheet for the NIMROD is available to download with full features - alternatively contact our sales team to discuss

Delivery, Returns & Instore Collection

When will I receive my order?

International Delivery Times

Monday – Friday 3 – 5 Working Days

UK Mainland Delivery Times

Monday – Friday before 2pm Next Working Day
Monday – Friday after 2pm 2 Working Days
Saturday & Sunday 2 Working Days

UK Extended Areas Delivery Times

Monday – Sunday 3 – 5 Working Days

Please note delivery times may be extended during busy periods.

EU Areas

Please note that due to changes by HMRC, orders being shipped to EU countries will not be shipped on the same day as they are invoiced. EU Orders will now be shipped on the next working day. This only applies to E.U. orders. Domestic and Worldwide shipments remain the same.

Collect In Store?

When you go to the online checkout, you can opt to collect your items in store. We'll let you know when your order is ready for you to collect. Your order will normally be ready to collect the next working day.

Returns, refunds or exchanges?

You can return any item within 28 days of receipt for a refund, provided the item is unused, in its original packaging and in 'as new' condition.

Items will be refunded in full (less postage) if received within 28 days from the date of despatch.


We aim to deal with all returns and exchanges on the day they arrive, however please allow longer during peak periods.

You can return the item(s) by dropping them off in store or by returning the item(s) by post. We do not insist on a specific courier service for the return, so please use the most economical or appropriate method for returning the item(s).

Northern Diver (Int) Ltd
Appley Lane North
Appley Bridge

If an item becomes faulty after a period of time then please contact customer services (01257 254 444 or prior to returning the item. We will either repair or replace the item at our discretion.

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Trade Customers

Northern Diver offers trade accounts to commercial organisations and to those who work in or around water. Please click here to register your details and find out if you qualify. Once your trade account has been confirmed you can view all trade prices and shop easily online when logged into your account. Please note when you are not logged in to your trade account retail prices are shown. If you have any queries please do not hesitate to contact us. Tel: +44 (0) 1257 25 44 44.