Electrical architecture
Networks sized for your sailing programme.
- 24 V / 12 V DC bus, battery bank
- 230 V AC network, shore / genset / inverter
- NMEA 2000 network, digital switching
- Power budgets per zone
Distributed architecture · 4 zones
Marine electrical & electronic engineering
Your boats' wiring, industrialised.
Architecture, schematics, harnesses, on-board integration. We bring automotive-grade documentation and industrial quality to shipyards, for new builds and refits alike.
The problem
On most boats, the electrical system is still designed while the cables are being laid.
- ×No predefined harness above 55 feet: wiring is done on board, without drawings.
- ×No two boats alike, even within the same series.
- ×Inconsistent connector quality, the main source of failures.
- ×Oversized harnesses that add weight to the boat.
- ×No installation drawings: after-sales teams have to hunt for cables.
- ×Costs and lead times that are hard to predict.
- ✓Harnesses designed and built upstream, delivered ready to install.
- ✓An identical installation on every unit in the series.
- ✓Qualified industrial connectors, 100% tested.
- ✓Optimised cross-sections: less copper, less weight.
- ✓3D location views: fast after-sales troubleshooting.
- ✓Budget and schedule under control from the design stage.
Our services
One point of contact, from architecture to delivered boat.
Entrust us with the full electrical scope, or just the step you are missing. Each building block produces documentation your yard can use.
Schematics
Complete documentation, based on automotive standards.
- Single-line diagrams, power distribution
- Bills of materials (BOM), wire list
- Terminal block list
- 3D location views
Harnesses
Designed, prototyped, then produced in series, with electrical testing.
- Optimised routing and cross-sections
- Prototype, then industrialised series
- Every wire labelled
- Continuity and insulation testing
On-board integration
Installation, connection and commissioning at the yard.
- Harness and panel installation
- Equipment connection
- Harbour and sea trials
- Drawings updated to as-built
Harnesses
Harnesses built the automotive way.
Every harness is designed, prototyped and then produced through an industrial process. It arrives at the yard labelled, tested and ready to install.
- Routing and cross-sectionsLengths and cross-sections calculated from the boat's 3D model.
- Wire-by-wire labellingEvery wire carries its ID, as listed in the wire list.
- Qualified connectorsControlled crimping, sealed connectors suited to the marine environment.
- 100% testingContinuity and insulation testing on every harness delivered.
Distributed architecture
A module close to every zone.
Instead of a central panel and hundreds of wires, each zone of the boat has its own module, linked to the others by a single data bus. Less copper, short power cables, and control from any screen.
- Power cables per zone< 2 m
- Voltage drop, critical circuitsΔV < 3% (ABYC)
- Mechanical bypass1 per zone
- Data busSingle NMEA 2000
Schematics & location views
The whole boat, wired before it is built.
We rebuild the boat's 3D model (CATIA V5/V6 to Composer) to check every cable route, anticipate clashes and produce location views that the yard and after-sales teams can use.
Measured on a real project · conventional vs distributed architecture
−0%Control wiring
The NMEA 2000 bus replaces hundreds of wires.
~0kgCopper saved
A direct gain in performance and heel.
<0%Voltage drop
On all critical circuits, ABYC compliant.
0zonesFull redundancy
Every zone remains controllable via a mechanical bypass.
Our method
Six phases, from specification to after-sales.
The cycle we apply in automotive, adapted to boatbuilding. For a series or a one-off.
PHASE 01
Design
Specifications, sizing, block diagrams and harness routing.
PHASE 02
Prototyping
First harness built, functional tests and adjustments.
PHASE 03
Industrialisation
Manufacturing processes, test protocols, production standards.
PHASE 04
Production
Harness manufacturing, inspection and testing of every unit.
PHASE 05
Integration
On-board installation, connection and commissioning at the yard.
PHASE 06
After-sales
Documentation, diagnostic tools and repair methods.
Deliverables
Every wire is documented.
You receive a complete electrical file that your production teams can read and your after-sales teams can use for the boat's entire life.
- Wiring diagrams (PDF + source files)
- Power distribution diagram
- Bills of materials (BOM)
- Wire list / cable list
- Terminal block list
- 3D views of the boat with harnesses
- Location views per equipment item
- As-built documentation
Safety & compliance
No single point of failure.
A three-level redundancy strategy: if the electronics fail, the electromechanical layer takes over; if everything fails, survival circuits remain hard-wired.
LEVELN1
Electronics
Redundant NMEA 2000 network: several independent control screens. If one fails, the others keep control of the whole boat.
LEVELN2
Electromechanical
A manual bypass on every module, accessible in each zone, with a diagnostic LED per circuit.
LEVELN3
Survival circuits
Bilge pumps, navigation lights, VHF and AIS stay independent of the digital system, on a dedicated supply.
ISO 13297ABYC E-11Division 241Category A · oceanISO 9001EN 9100
Ongoing project · Refit
Complete electrical refit of a Feeling 55.
On this 55-foot sailboat, we are redoing the entire electrical architecture: design, schematics, harness manufacturing and on-board installation. It is the first project where we apply our automotive method end to end on a boat.
BoatFeeling 55, monohull sailboat
TypeRefit
ScopeArchitecture → installation
StatusDesign in progress
Contact · Marine
Let's build your boats' electrical systems together.
Shipyard, naval architect or owner: tell us about your project and an engineer will reply within 48 business hours.
Emailcontact@aliantec.co
France+33 6 43 09 93 59
Morocco+212 6 60 77 98 79