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OLAS Core Portable Wireless Overboard Alarm

OLAS Core Portable Wireless Overboard Alarm


The Core is a compact, portable overboard alarm and emergency light system. It reacts within 2 seconds of a person falling overboard and can easily be switched between vessels without the time and cost of wired instillation. The Core can connect with up to 15 OLAS transmitters and cover a vessel up to 50ft.

1 in stock


What it does

The Core wirelessly tracks OLAS transmitters around the vessel. When a person wearing a transmitter falls overboard the in-built alarm is triggered and a high-power emergency red light gives visual indication and illuminates the surrounding area, all within 4 seconds.

As well as triggering the Alarm, the Core connects with the free OLAS mobile application providing an easy to read arrow back to the alert position plus essential MOB last known position information and an auto populated VHF prompt screens to support the crew during the stress of a recovery operation.


Why use the OLAS CORE

The Core gives skippers complete confidence that in the event of a MOB incident, the entire crew are alerted instantly and can take immediate recovery actions.

Losing a crew member overboard is every sailors’ worst nightmare. The larger the boat, the more difficult it can be to know immediately that a MOB incident has occurred, especially in the dark with crew members forward of the mast.

It can happen all too easily even in benign conditions. Wearing a physical tether, whilst advisable, is not always practical, and indeed falling overboard on a tether has been proven to be no guarantee of survival if the boat is at full speed and the skipper is not immediately aware of the incident.


Who is it for

The Core connects to 15 crew members via wearable OLAS tag transmitters, creating a virtual lifeline. Larger vessels can be fitted with an OLAS Extender which increases the range from 50ft to 80ft. Suitable for anyone heading out on the water looking for added security and peace of mind. The OLAS tags are compact, light eight and have user replaceable batteries, suitable for adults, children, pets or important items which may fall overboard.

Core Advantages

OLAS IntegrationAny OLAS transmitting devices, the OLAS Tags and OLAS Float-On LED light, within range can be tracked by the CORE, allowing freedom for the crew to move around the deck, with total confidence that an early warning system will alert them instantly of a MOB incident, so a swift recovery can be actioned.

Connects to 15 OLAS Transmitters (OLAS Tags or OLAS Float-On)

Connecting up to 15 OLAS transmitters allows the CORE to be used on onboard larger vessels. OLAS transmitters are not only designed for crew, simply by attaching a transmitter to objects such as MOB flotation devices, the dog or a yacht tender, you can always be aware if something has gone missing.

Extender compatible

An OLAS Extender, which is also 5V USB powered with an internal rechargeable battery can be used to cover areas where the transmitter signal may be blocked. This allows complete scalability and portability to vessels up to 80ft.

Portable with low power consumption – 5V USB

The portable module is powered by 5V USB power supply enabling it to be used on different vessels without requiring hard wiring.

Inbuilt Alarm

An 85db alarm will sound to indicate an OLAS transmitter has gone out of range. The CORE can be linked up with the OLAS app so that alarms can be placed in 2 locations on the vessel.

Inbuilt Emergency Light

A high-power emergency Red light will illuminate, offering clear visual indication of an alert, whilst also acting as a light to illuminate the area to aid with recovery at night.

System Feedback

The CORE clearly indicates how many OLAS transmitters are connected during the setup process. Transmitters can be Added/Removed from the system either using the mobile App or through simple inbuilt switching process.


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Free Delivery Offer: Free carriage on online orders over £50.00 after any discount in one single purchase to UNITED KINGDOM MAINLAND ONLY. (This excludes Northern Ireland, Northern Scotland and Highlands & Islands.) This offer excludes large items (Kayaks, SUP,canoes, waterski’s) and hazardous products, lift rafts, distress flares, electronics. Free delivery orders in stock have an estimated delivery time of 4-5 days. If some of the items you have ordered, are not in stock this means you might need to wait a little longer. For orders under £100.00, small packets at £2.95 and £3.95 2/3 working days. Next day delivery £6.95. Next working day delivery cannot be guaranteed to outline districts; Northern Ireland, Northern Scotland and Islands. Next Working Day: Orders received before 1pm Monday to Friday should be dispatched the same day provided we have your items in stock. Orders received after 1pm on Friday and over the weekend, will be dispatched on Monday. Items ordered over a Bank Holiday will be dispatched on the next working day. Signed For Items: All orders over the valve of £20.00 must be signed for on receipt and cannot be left without a signature. If prior notice is given, items can be left with a neighbour. If you are not at home when the courier delivers, they will leave a card so you can contact them and arrange a convenient delivery time. Returns: If you need to return an item to Andark please follow the procedure below: Please contact us by telephone 01489 581755 or email Returns should be delivered to RETURNS, Andark 256 Bridge Road, Lower Swanwick, Southampton, SO31 7FL. Please download the returns form Here if you don’t already have one. Returned goods must be unused and in a saleable condition, with original tags and packaging. We will either arrange to refund you, replace the goods with a different size or colour, or issue a credit note. Returns must be received within 28 days of purchase. If you are returning something because it does not fit, is the wrong colour or is unsuitable you will need to pay for the return postage. If the item is faulty and within it’s guarantee period we will refund your return postage on inspection of item.

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256 Bridge Road,
Lower Swanwick,
Hampshire UK,
SO31 7FL

Call us on: +44 (0)1489 581755
Fax us on: +44 (0)1489 575223

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Andark was formed in 1976 , originally as a diving contractor working on many underwater projects from ship hull surveys to underwater construction and marine salvage. In 1980 we diversified into scuba diver training . Today Andark is one of the country’s biggest leisure diving schools offering a range of world-recognised dive courses.


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