Frequently asked questions

Yes, you can upgrade your subscription plan using our online subscription management page.

Sure, you can easily share your past or current routes with your friends and family via e-mail or on your social media.

The entire service, you have zero additional costs. What about the next year? You will easily renew the subscription in the online shop.

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If your boat does not already come equipped with Sentinel Telematics (see our Partners page), you can purchase Sentinel products via our Delears network. For more information please contact us at info@sentinelmarine.net

On your phone or tablet, install the application "Sentinel - your boat, online" which you may download from the App or Play Store (for Android or iOS respectively). Use the app to create an account (or login). Scan the QR code on the front side of the device. Follow the on-screen instructions to complete the activation process and enter information about your boat.

If your device relies on 3G, please read the "Why Does This Matter for You?" and "What You Can Do" sections below to understand how this will affect your service and what steps you need to take.

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As many of you may have noticed, telecommunications providers around the world are shutting down their 3G networks. This transition is impacting a wide range of devices and services, including earlier versions of our product that rely on 3G for connectivity. Here's a breakdown of what’s happening and why these shutdowns are important:

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What is 3G Shutdown?

3G (third-generation) networks, which were introduced in the early 2000s, enabled mobile devices to access the internet at faster speeds than 2G. However, as technology evolved, 4G (LTE) and 5G networks have taken over, offering far superior data speeds, better reliability, and lower latency.

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To meet the increasing demand for faster, more efficient mobile networks, telecom operators are phasing out 3G services. By shutting down 3G, they free up valuable spectrum to expand their 4G and 5G networks, which are more suited to modern needs, such as video streaming, high-speed data transfer, and IoT (Internet of Things) applications.

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Why Does This Matter for You?

If your device or an earlier version of our product relies on 3G for connectivity, the 3G shutdowns could lead to a loss of service or reduced performance in areas where 4G or 5G networks are not supported by the product. Once 3G networks are decommissioned in a particular area, devices using 3G may no longer be able to connect to the internet, send data, or perform any network-related functions, or they may experience significantly decreased service quality.

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When Will This Happen?

The exact timeline for 3G shutdowns varies by country and region, as each telecom provider manages its own network. Some countries have already completed their 3G phase-out, while others are in the process or planning to do so soon. Major telecom providers in the US, Europe, Australia, and Asia are progressively turning off 3G networks, with many aiming for completion between 2023 and 2025.

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Stay informed about global 3G network shutdowns with this resource, keeping in mind that while the information may not be completely precise, it offers valuable insights.

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What You Can Do

To continue enjoying uninterrupted service and connectivity, you may need to consider upgrading to a version of our product that supports 4G. By moving to a 4G, you can ensure future-proof connectivity and access to faster, more reliable networks as 3G becomes obsolete.

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If your device is affected by the 3G shutdown and you have already purchased a new 4G-compatible version of our product, we are offering compensation to assist with your transition. To qualify for this compensation, please fill out the Compensation request form linked below before registering your new device. This request is required to process your claim and ensure you receive the appropriate support.

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*To keep your trip history when replacing your device, follow the step-by-step guide at this link.

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Eligibility Criteria

• Users residing in regions where the 3G network is undergoing progressive shutdown
• Devices with serial numbers starting within the range of 20XXXXXXXX to 32XXXXXXXX

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Compensation request

You can find the request form HERE.

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We understand that this transition may require some adjustment, and we are here to assist you with any questions or concerns you may have about your specific device and network changes. Please feel free to contact our customer support team for help with upgrading or understanding how the 3G shutdown impacts you.

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Thank you for your understanding and continued support as we navigate this important technological shift.

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Yes. A subscription is required to use your Boat Monitor.

If you have an Apple device, click here. If you have and Android device, click here. We also have a web app at web.sentinelmarine.net.

Use the smartphone or tablet to scan the QR code on the Boat Monitor, and follow the instruction on screen. The process should only take you a moment.

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European coverage:

Austria
Belarus
Belgium
Bulgaria
Croatia
Cyprus
Czech Republic
Denmark
Estonia
Finland
France
Germany
Greece
Hungary
Ireland
Italy
Latvia
Liechtenstein
Lithuania
Luxembourg
Macedonia
Malta
Monaco
Netherlands
Norway
Poland
Portugal
Romania
Serbia
Slovakia
Slovenia
Spain
Sweden
Switzerland

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Worldwide coverage (roaming restrictions apply (eg. Turkey, Brazil)):

Afghanistan
Albania
Algeria
Anguilla
Antigua and Barbuda
Argentina
Armenia
Aruba
Australia
Austria
Azerbaijan
Bahamas
Bahrain
Bangladesh
Barbados
Belarus
Belgium
Belize
Benin
Bermuda
Bolivia
Bonaire
Bosnia & Herzegovenia
British Virgin Islands
Brunei
Bulgaria
Burkina Faso
Burundi
Cambodia
Cameroon
Canada
Cape Verde
Cayman Islands
Chad
Chile
China
Colombia
Costa Rica
Croatia
Cyprus
Czech Republic
Denmark
Dominica
Dominican Republic
Ecuador
Egypt
El Salvador
Equatorial Guinea
Estonia
Eswatini
Fiji
Finland
France
French Guyana
Gabon
Gambia
Georgia
Germany
Ghana
Gibraltar
Greece
Greenland
Grenada
Guinea
Haiti
Honduras
Hong Kong
Hungary
Iceland
India
Indonesia
Iran
Ireland
Isle of Man
Israel
Italy
Ivory Coast
Jamaica
Japan
Jersey
Jordan
Kazakhstan
Kenya
Kiribati
Kuwait
Kyrgyzstan Republic
Laos
Latvia
Lesotho
Liechtenstein
Lithuania
Luxembourg
Macau
Macedonia
Malaysia
Mali
Malta
Mauritius
Mexico
Moldova
Monaco
Mongolia
Montenegro
Montserrat
Morocco
Myanmar
Namibia
Nepal
Netherlands
New Caledonia
New Zealand
Nicaragua
Niger
Nigeria
Norway
Oman
Pakistan
Palestine
Panama
Papua New Guinea
Paraguay
Peru
Philippines
Poland
Portugal
Qatar
Romania
Russia
Rwanda
Saudi Arabia
Senegal
Serbia
Sierra Leone
Singapore
Slovak Republic
Slovenia
Somalia
South Africa
South Korea
South Sudan
Spain
Sri Lanka
St Maarten
St. Kitts & Nevis
St. Lucia
St. Vincent & the Grenadines
Suriname
Sweden
Switzerland
Taiwan
Tajikistan
Tanzania
Thailand
Togo
Tonga
Trinidad & Tobago
Tunisia
Turks & Caicos
Uganda
UK
Ukraine
United Arab Emirates (UAE)
Uruguay
USA
Uzbekistan
Vanuatu
Venezuela
Vietnam
Zambia
Zimbabwe

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Coverage on request (contact support for activation, limitations apply):

Bhutan
Botswana
Central African Republic
East Timor
Faroe Islands
French Polynesia
French West Indies
Guadeloupe
Guatemala
Guinea-Bissau
Guyana
Korea, Republic Of
Kosovo
Lao People's Democratic Republic
Liberia
Madagascar
Malawi
Mozambique
Netherlands Antilles
Puerto Rico
Réunion
Samoa
Seychelles
Swaziland
Yemen

Please be aware that coverage may change without notice due to factors outside Sentinel's control.

Boat Monitor consumes 1 Ah during a day of sailing and only 24 mAh while your boat is moored. The impact of Boat Monitor on your boat batteries should not be noticeable.

Yes, but very little. With a 100 Ah battery the Boat Monitor will work more than 6 months (this is without charging it).

You will receive a mobile push notification. You should be logged-in to the Sentinel app and have access to WiFi or 3G/4G.

GPS Tracking frequency is dynamic - it depends on whether the boat is turning, going straight or not moving at all. The resulting tracks are very detailed as can be seen in this image:

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For performance reasons the points may be slightly sparser when displaying the routes on your computer, phone or tablet. You can download the full track using the "Download GPX" button on any route in the web app.

When a guests scans the QR code and creates an account, you will be sent a guest request, which will allow the guest to see the routes and other information about the boat. You may confirm or reject the guest request by clicking on "Accept" or "Reject" buttons in the Guests section of the web application or within the application on your mobile device.

On your phone or tablet, install the application "Sentinel - your boat, online" which you may download from the App or Play Store (for Android or iOS respectively). Use the app to create an account. Scan the QR code on the front side of the device or provided by the "owner" of the boat.

Upon completion, the wizard will send a "guest request" to the boat owner for confirmation. After the request is accepted you will be able to start using the application.

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The registration code is embedded within the QR code. The serial number (SN) can be found on the front face of the device.

The correct device orientation can be found in your device's installation manual. Do not place the device under metal enclosures.

Please verify that:

• You are properly connected to internet (WiFi, 3G or 4G)
• You are using correct credentials (username and password)

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You may have activated the "anchor alarm" functionality, and the Sentinel service is warning you that your boat has moved from its initial position.

The device will store the captured data (routes, battery status, alarms, etc) on the device until internet connection is secured. Then, the data will be uploaded and you will be able to see it in the Sentinel apps.

You may be in an area without mobile Internet coverage (3G or 4G - LTE). The information will appear on your device when strong mobile signal is available.

One of the following may be happening:

• The device has not yet started sending data to the server. In some cases, it may take up to 15 minutes after the device is activated and turned on for the first data point to appear.
• The device may not be connected to an Internet network.
• The SIM card is not yet activated. Please contact Sentinel support.

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Due to the sampling frequency it may occur that the route is occasionally (but rarely) drawn over land. If this occurs frequently, please inform the Sentinel technical support using the Report Issue button in the app.

Of course. To access support it is best that you use the "Report Issue" button in the app. Alternatively, you can write as on suport@sentinelmarine.net.

You may have an outdated browser. Try upgrading your browser to the latest version.

3 weeks before your subscription expires you will receive an email with instructions on how to renew your subscription. At the same time, both the mobile and web application will show an informative banner.

Upon receiving the email that your subscription is about to expire, you will also be able to renew your subscription. In the web application, click on the Account dropdown menu and select "My Subscriptions". From there you will be able to manage the subscription plans for all your devices. After completing the renewal process for a device, future renewals are automated. You will receive an email notice before your card is billed every year.

You can customize your subscription plan to fit your needs at any time. You can choose from different coverage areas (Europe, Worldwide), upgrade the number of allowed sensors and switches, and choose between additional features such as CZone Switching and Alerts and Sentinel Plus.

Yes. The feature you have chosen to downgrade will continue working until the end of the active subscription term, but will not be extended with successive automatic renewals.

After a brief grace period monitoring functionality will be suspended. Renewal of an expired subscription incurs and additional re-activation fee.

You will be able to renew your subscription 21 days before your subscription expires. At that time, you will also receive an email with instructions on how to proceed. If you did not receive the email, and the option is still not present, please contact Sentinel support.

If you do not activate the service within 1 year of purchase, your activation PIN will expire. You will have to buy a new subscription online.

Yes, you can do so at any time. Any existing subscription will continue working until expiry.
To disable automatic renewal, in the web application click on the Account dropdown and select "My Subscriptions". Then, use the option "Manage automatic renewal" corresponding to your device.

You can cancel automatic renewal of your subscription plan at any time. Your device will continue working until the end of your subscription. If you wish to completely stop using the Sentinel services, and stop monitoring at once, delete the boat from the Sentinel application and unplug the monitoring device from power.

We currently support Mastercard, Visa and PayPal.

Sentinel is required by law to apply tax charges, which are based on the location of your residence you provide in the billing details.

We currently do not support adding VAT ID when using our online subscription renewal process. If you are a VAT-exempt business and need to renew a subscription please contact Sentinel support.

The CZone addon allows you to remotely switch selected CZone circuits and receive alerts from the CZone system. Two flavours of the addon are available: Unlimited and Lite

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The CZone Unlimited addon allows you to:

• Receive all alerts generated by the CZone system.
• Select and switch an unlimited number of CZone circuits. These are excluded from the subscription plan size limit.

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The CZone Lite addon allows you to:

• Receive all alerts generated by the CZone system. Some restrictions apply, see below *.
• Select and switch** a limited number of CZone circuits. Each selected switch takes one slot in your subscription plan size limit.

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* The behaviour of CZone alerts is different between Lite and Unlimited addons. With Unlimited, alerts that are cleared in the CZone system but triggered again will fire a push notification to the Sentinel app automatically. With Lite, alerts need to be cleared manually in the Sentinel app in order to receive new alerts from the CZone system (from same source).

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** When using CZone Lite, toggling a circuit in the CZone system will sync to the Sentinel app no later than every 20 minutes. Toggling a switch in the Sentinel app is reflected immediately in the CZone system. With Unlimited, the sync is always immediate.

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The CZone addon is not needed if you are only interested in monitoring CZone circuits (without switching and CZone alerts).