List of I-VMS type-approved devices for under-12 metre English vessels
Information to support vessel owners and licence holders of under-12 metre English vessels.
Updated – 11 June 2026
Information about the type-approved I-VMS devices and how to purchase and install a device.
- Please note: CLS UK Ltd is currently the only supplier of a type-approved device that is transmitting I-VMS data to the UK VMS Hub.
For full details about the roll-out of the I-VMS programme, please visit our I-VMS guidance pages .
Type-approved devices
The following tracking devices have passed the MMO I-VMS type-approval process by meeting the I-VMS device specification of requirements.
| Device provider | Fulcrum Maritime Systems Ltd | Succorfish Ltd |
|---|---|---|
| Approved I-VMS tracking device | Nemo | SC2 |
| Date of approval | Nov-21 | Nov-21 |
| Product adaptable for all vessels | Yes | Yes |
| Power options | Onboard electrics, Solar | Onboard electrics, Solar, Power pack |
| Transmitting data to the UK VMS Hub | Yes | No |
Companies
Company name: CLS UK Ltd
Device name: Nemo
Date of approval: November 2021
Website: https://uk.groupcls.com/nemo-i-vms-england-2/
Contact telephone number: +44 (0)1708 788 400 UK
Product adaptable for all vessels: Yes
Transmitting data to UK VMS Hub: Yes
Dimensions: 222 x 127 x 105mm
Supplier response to service/support questions.
Company name: Succorfish Ltd
Device name: SC2
Date of approval: November 2021
Website: www.succorfish.com
Contact telephone number: +44 (0)1914 476 883 UK
Product adaptable for all vessels: Yes
Transmitting data to UK VMS Hub: No
Dimensions: 210 x 95 x 55mm
Supplier response to service/support questions.
Purchase and install a device
All English licenced under-12m vessels must have a type-approved device installed and transmitting data to the UK VMS Hub when undertaking any trip to sea to comply with the licence condition introduced on 12 May 2025, or risk being unable to fish legally and possible enforcement action.
Follow the steps below to arrange for the purchase and installation of an MMO type-approved I-VMS device.
- Please note: CLS UK Ltd is currently the only supplier of a type-approved device that is transmitting I-VMS data to the UK VMS Hub.
Purchase your device
Review the information above or contact the supplier to discuss your requirements.
You can order your device and arrange installation b online or over the phone.
Install device
The supplier will coordinate your installation directly or provide details of their approved engineers so you can arrange the installation of your device.
- You should not attempt to install your device yourself - any damage or manual interference could void your device warranty.
Read the guidance on operational requirements
Once you have your device, make sure you are familiar with the operational requirements of the licence condition. This includes checking your device, its power supply and data transmissions.
Visit the guidance page on I-VMS licence condition requirements.
Related content
Updates to this page
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Updated notice with advice for industry, relating to I-VMS device data transmissions
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Guidance updated to reflect that a licence condition is now in force for the use of I-VMS devices on licensed English vessels, under-12 metres in length, undertaking a trip to sea.
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Update 18 January 2024
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7 December 2023 update
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Update to service support packs
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I-VMS update 16 August 2023
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I-VMS update
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Added updated dated 19th June
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List of approved devices updated following results of independent testing.
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25 April 2023 update.
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Update 21st April
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I-VMS update 21/10/2022
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Changes to page in line with reinstatement of Maritime Systems and extension of tranche 1 dates
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I-VMS Updates to page
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First published.