Sentinel Marine solutions

What Sentinel Marine solutions does

Sentinel Marine Solutions (legal entity Sentinel d.o.o.) is a privately held Croatian marine IoT company founded in 2014 and headquartered in Zagreb. It provides a connected-boating ecosystem centered on the Boat Monitor BM-50 hardware family (Standard and Lite variants) — onboard edge devices with built-in 4G, GPS, NMEA 2000 integration, and digital switching support — paired with a cloud telematics SaaS platform and mobile apps. The system delivers real-time battery, shore power, bilge, security, geofence, and engine/tank monitoring, plus remote control of onboard systems.

The company monetizes through a hybrid model: one-time hardware bundle sales (SafeGuard, SafeGuard Plus, Secure) that include the first year of a global connectivity subscription, recurring annual subscriptions thereafter, OEM/white-label licensing deals (notably SEANAPPS with Groupe Beneteau and Honda Marine Monitor), and partner services revenue through a certified installer network. Sentinel GO, a free 2025 mobile app, functions as a freemium entry point into the paid Sentinel Premium tier.

Its customer base spans four segments: private boat owners (peace-of-mind monitoring), boat builders and OEMs (white-label connected experiences; 40+ partners including Beneteau, Jeanneau, Prestige, Lagoon, Hanse, Oyster, Riviera, and Honda Marine), charter fleet operators (multi-vessel visibility; 400+ fleets across Europe), and certified service partners. The platform reports 45,000+ users, 25,000+ connected boats, and 60M+ miles of processed tracking data. Sentinel has historically operated as a founder/management-owned entity with only one disclosed institutional round (~$1.17M from South Central Ventures in October 2017) and a lean 11–50 employee footprint.

Name

Sentinel Marine solutions

Legal name

Sentinel d.o.o.

Website

https://sentinelmarine.net

Company type

Private

Founded year

2014

Operating status

Operating

Headcount range

11–50 employees

Short description

Sentinel Marine Solutions is a Croatian marine IoT company that provides connected-boat monitoring hardware (Boat Monitor BM-50), a cloud telematics platform, and mobile apps — serving private boat owners, 40+ OEM boat builders (e.g., Groupe Beneteau, Honda Marine), and 400+ charter fleets worldwide.

Ownership category

akta.pro rank

Product category

Marine Telematics and Connected Boat Monitoring

NAICS

Other Support Activities for Water Transportation (48839), Support Activities for Water Transportation (4883)

SIC

Industrial Instruments For Measurement, Display, And Control (3823), Measuring & Controlling Devices, Nec (3829), Computer Communications Equipment (3576)

akta.pro primary industry

Marine Sensors, Instrumentation & IoT (Condition Monitoring) (IMAJAJAI)

akta.pro secondary industries

Marine Automation, Control & PLC/SCADA Systems (IMAJAJAC), Marine Electrical Installation, Commissioning & Field Services (IMAJAJAL)

Keywords

• Connected boat monitoring
• Marine telematics systems
• Boat IoT hardware
• Fleet management software
• OEM white-label marine

Headquarters

HQ city

Zagreb

HQ country

Croatia

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

Technology or R&D, Supply Chain, Personnel, Operations, Marketing or Sales, Infrastructure

Revenue model

1. Hardware Sales: Sale of Boat Monitor devices (BM-50 Standard and Lite) and sensor bundles (SafeGuard, SafeGuard Plus, Secure) as one-time hardware purchases with first-year global subscription included.
2. Subscription (Global): Annual subscription model for global connectivity and real-time monitoring services after the first year. Subscription keeps boats connected for ongoing monitoring, alerts, and data access.
3. OEM/White-label Licensing: Technology licensing and white-label partnerships with boat builders like Groupe Beneteau for SEANAPPS solution, Honda Marine Monitor, and other OEM partners embedding Sentinel technology into their vessels.
4. Partner Services: Revenue opportunities for certified service partners through hardware sales, installations, and connected boating services.

Pricing tiers

Go-to-market motion4 records

Distribution channels6 records

Marketing channels8 records

Core offering

Sentinel Marine Solutions provides a connected boating ecosystem built around the proprietary Boat Monitor (BM-50) hardware with 4G and GPS, paired with a cloud-based telematics SaaS platform and mobile/web applications. The offering includes pre-configured sensor bundles (SafeGuard, SafeGuard Plus, Secure), the free Sentinel GO app, and the Sentinel Premium subscription service, delivering real-time remote monitoring of batteries, shore power, bilge water, security, GPS tracking, geofencing, NMEA 2000 engine data, and digital switching for boat owners, boat builders, and charter fleets. The company also licenses its technology as white-label solutions such as SEANAPPS (Groupe Beneteau) and Honda Marine Monitor.

Product overview

Sentinel Marine Solutions provides a connected boating ecosystem organized into two tiers: (1) Sentinel GO — a free, hardware-free mobile app offering checklists, trip logging, maintenance management, and document storage, serving as an accessible entry point; and (2) Sentinel Premium — a full solution pairing Boat Monitor hardware (BM-50 Lite and BM-50 Standard) with a subscription, enabling real-time monitoring, remote control, battery diagnostics, security sensors, NMEA 2000 integration, and digital switching. These are sold through pre-configured product bundles: SafeGuard (essential monitoring), SafeGuard Plus (NMEA 2000 integration and remote switching), and Secure (advanced security with motion and door sensors). The platform also integrates with third-party systems including CZone, EmpirBus, Simarine, SEANAPPS (Groupe Beneteau), and Honda Marine Monitor, and is available through Boat Builders (OEM), Fleet/Charter Operators, and Service Partners.

Differentiator

Problem solved

Functional benefit

Products and services

• Sentinel GO App Free, hardware-free mobile application providing an entry point into smart boating with checklists, automatic trip logging with GPS, maintenance management, document storage, and messaging with service partners — available without any Boat Monitor device.
• Sentinel Premium

Quantifiable outcome

• Sentinel system helped save lives of nine guests aboard a rental boat by detecting toxic hydrogen sulfide gas from battery short circuit
• +2 more outcomes

Named customers17 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration6 records

Feature8 records

Partnerships

Seven partnerships are on record, tiered core and flagship.

• Sentinel Partner ProgramcoreChannel Partner/ Reseller/ Distributor · 1 January 2024Official launch of Sentinel Partner Program at METS 2024 offering installers the opportunity to join the global certified partner network and benefit from exclusive access to installation jobs, marketing support, and product sales.
• Groupe BeneteauflagshipOEM/ Whitelabel/ Licensing Partner · 1 January 2021Strategic partnership to bring white-labeled SEANAPPS connected boat solution to Groupe Beneteau brands (BENETEAU, JEANNEAU, PRESTIGE). Sentinel provides the technology platform enabling boaters, dealers, and charter companies to connect to boats remotely. By 2025, all 9,000 boats built annually will be equipped with SEANAPPS as standard equipment.
• Honda MarinecoreOEM/ Whitelabel/ Licensing PartnerPartnership to create Honda Marine Monitor - a connected boat experience making boat and engine data accessible via website portal and smartphone app. Sentinel provides the connectivity gateway using marine telematics data enabling in-app monitoring and smart notifications. Focus on enhanced security and simplified engine maintenance for outboard boats.
• Greenline YachtscoreTechnology or IntegrationGreenline integrates Sentinel technology to monitor hybrid energy systems in their eco-friendly boats. The integration provides customers with smart and connected boats that support hybrid/electric propulsion monitoring.
• 40+ Boat Builder OEM PartnerscoreOEM/ Whitelabel/ Licensing PartnerSentinel partners with over 40 boat builders including Solaris, Riviera, Flemings, XCS, Greenline, Sargo, Prestige, Delta, Zeelander, Beneteau, Jeanneau, Honda Marine, Oyster, Sabre, Lagoon, Delphia, Four Winns, Wellcraft, Sealine, Fjord, Ryck, Y Yachts, Moody, Dehler, Hanse and others who integrate Sentinel connected boat technology into their vessels.
• CZone, EmpirBus, SimarinecoreTechnology or IntegrationSentinel integrates with compatible digital switching and onboard monitoring systems including CZone, EmpirBus, and Simarine, allowing deeper onboard visibility and expanded control possibilities through existing onboard infrastructure.
• 400+ Fleet & Charter OperatorscoreChannel Partner/ Reseller/ DistributorOver 400 fleets and charter operators including Waypoint, Sunturist, Suncharted, Smartsail, Simple Sail, Seadrive, Sailing Forever, White Sail Club, Reful, Q Yachts, Prime Yachting, Pitter, Perfect Yachts, Pelsys, Noa Yachting, Navis Marine, Navigo, Navigare, Nautic Alliance, Multihull, Koro, In the Blue, Hermes Yachting, Feel Yachting, Euronautic, Euro Yacht, Venturi, Novak, EOL Yachting, Emu Yachting, Chilla Sailing, White Candor, Bruneko, Boomerang, Beta Charter, Belen Charter, Astarea, Angelina, Adria Yachting use Sentinel for fleet management.

Scale indicators7 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Garmin: Global marine electronics leader (GPS, chartplotters, MFDs) with active connected-boat capabilities through its marine segment. Comparable as it sells navigation, monitoring, and connected features to boat builders and owners, though it operates across a much broader portfolio.
• Navico (Simrad, Lowrance, B&G): Leading marine electronics group with strong OEM penetration into boat builders via Simrad, Lowrance, and B&G brands. Comparable as it bundles connected features into navigation systems and serves the same OEM customer base as Sentinel.
• Raymarine (FLIR Systems): Major marine electronics brand offering chartplotters, radar, sonar, and integrated vessel monitoring. Comparable as a supplier of connected electronics to boat builders and owners, though its core focus is navigation/MFD rather than standalone IoT telematics.

Emerging players

• PredictWind: Marine weather routing and IoT connectivity provider with offshore tracking and satellite/cellular communication tools. Comparable as a marine data and connectivity provider for boat owners, though focused more on weather/navigation than hardware telematics.
• Vessel Vanguard: Yacht management and maintenance tracking platform that combines onboard sensors with a SaaS management dashboard for owners and operators. Comparable as a connected-boat maintenance/monitoring software provider with subscription model overlap.

Direct peers

• Digital Yacht: UK-based marine electronics company producing NMEA 2000 sensors, AIS, and connectivity products for boat builders and owners. Comparable in target market and product adjacency to marine telematics and onboard networking.
• Yacht Devices: Manufacturer of NMEA 2000 sensors, gateways, and marine monitoring hardware for boats and yachts. Comparable to Sentinel in offering NMEA 2000-integrated remote monitoring and boat telematics for OEMs and owners.
• Siren Marine: Direct competitor offering cellular-connected boat monitoring, GPS tracking, security, and remote control for boat owners and fleets. Highly comparable as a pure-play IoT telematics provider in the same connected-boat category as Sentinel.
• Maretron: NMEA 2000-based marine monitoring specialist offering vessel instrumentation and network components. Comparable to Sentinel's NMEA 2000 integration and onboard system visibility capabilities.
• GOST (Global Ocean Security Technologies): Marine security and monitoring provider offering vessel tracking, intrusion detection, and remote surveillance for yachts and commercial fleets. Comparable to Sentinel's Secure Bundle and security/safety positioning.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xx.com/Sentinel_Marine
• Facebookfacebook.com/sentinel.marine.solutions

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds1 record

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Sentinel Marine solutions