Marine electronics repair, French Riviera
Rapid intervention from Saint-Tropez to Monaco.
Troubleshooting, installation & refit (all brands).
About
A technical partner for your onboard systems
Simplify project management and life on board. SEMA is your single point of contact for designing, integrating, and maintaining electronics for your yachts, sailboats, and professional units.
One pilot for your project: Our independent and multi-brand positioning allows us to build a custom architecture. We prioritize performance, but also ergonomics, to offer you a fluid system without brand constraints.
Integration designed for ergonomics: Beyond neat cabling, we design logical and intuitive installations. Equipment is positioned for accessibility, and interfaces are configured to be simple to use from day one.
Training and immediate autonomy: We don't just deliver; we transfer knowledge. Our support includes educational and practical training for the crew, ensuring total mastery of the tools and reactive seasonal support from the person who designed the system.
Learn more about the company →Service areas
Interventions at dock, anchor or shipyard:
Our Expertise
Comprehensive marine electronics
Installation & Refit
Complete studies, targeted replacements or full refits. State-of-the-art installation with neat cabling.
Audit & Troubleshooting
Assessment of existing systems, onboard or remote fault-finding, and firmware updates.
Navigation
Autopilots, radars, wind/speed sensors, GPS, charts and multi-function displays.
Communication
VHF, AIS, 4G/5G routers, internal Wi-Fi networks, guest networks and marina links.
Sat TV & Starlink
Integration of Starlink Maritime and gyro-stabilised Sat TV antennas.
Entertainment
Multi-zone systems, simple interfaces and TV / amplifier / digital source integration.
Lighting Design
Halogen-to-LED conversion, cabin/deck ambience scenes, and energy-aware lighting.
Energy & Lithium
LiFePO4 banks, smart chargers, monitoring and silent autonomy at anchor.
Vision & Cameras
FLIR thermal cameras, 360° docking views and chart/AIS overlay for night navigation.
Process
A rigorous methodology
Audit & Diagnostic
Precise analysis of existing systems, compatibility checks, and definition of objectives.
Quote & Advice
Reasoned proposals optimized for your navigation program and realistic timelines.
Installation
Invisible integration: structured cabling, discreet mounting, and strict standards.
Tests & Commissioning
Dynamic sea calibration and validation of communication protocols.
Handover & Support
Handover to the crew, delivery of the digital health log, and proactive support.
Evolution & Follow-up
Technology watch and periodic updates to keep your vessel at the peak of performance.
Testimonials
What our clients say
"Impeccable Starlink Maritime installation on our Sunseeker 82. Neat cabling, seamless integration into the existing network. Stephane took the time to explain the system to the crew. Premium service, highly recommended."
"Autopilot failure before our departure for Corsica. Stephane intervened in less than 24h, quick diagnosis and replacement of the defective sensor. Exemplary professionalism and reactivity."
"Complete electrical system upgrade on our vessel. A complex technical intervention carried out with great mastery. The worksite was left spotless and on time. A sure bet."
"Radar issue fixed in the middle of the season. Ultra-fast intervention in Mandelieu. Very competent technician who saved our summer holidays."
"Complete dashboard refit on my Princess. Great advice for choosing the screens. The result is stunning and very ergonomic."
"Complete bridge refit: new Garmin MFDs, Doppler radar, and electrical network overhaul. Surgical work, structured and labeled cabling, impeccable technical documentation. Pure professionalism."
Quick contact
Let’s talk about your onboard electronics
A refit, an upgrade or an urgent problem? A direct conversation quickly finds the best solution.