Electrical diagnostics & troubleshooting
Methodical fault-finding using proper marine diagnostic tools.
Boat electrical diagnostics, repairs, installations and marine-grade supplies for yacht owners, captains and charter crews. Walk-in welcome at the marina shop.

Working hours
Mon – Sun · 09:00 – 21:00
Walk-in shop
At the marina
Boat electrical issue before departure?
Autonautics is inside Kos Marina. Open Mon – Sun 09:00 – 21:00.
Services
Three focus areas. Every job documented, every cable labelled, every connection marine-grade.
Systematic fault-finding for everything between the shore plug and the masthead light.
Methodical fault-finding using proper marine diagnostic tools.
Re-wiring, panel upgrades and clean circuit protection.
Pre-season and pre-departure surveys to catch issues early.
Battery banks, shore power, solar and inverters — designed and installed for marine duty.
Testing, replacement, AGM/lithium upgrades and bank installs.
Galvanic isolation, AC repairs, safe marina power connections.
Panel mounting, MPPT controllers, integration with existing systems.
Inverters, multi-stage chargers, complete power system design.
Lights, pumps and electronics — wired neatly, labelled, and built to last.
LED upgrades, nav light repairs, interior lighting installs.
Pump installs, float switches and automatic bilge configurations.
Chartplotter, radar, VHF and instrument wiring done cleanly.
Marine Shop
Need the right part quickly? Walk in for marine cables, switches, fuses, lighting, charging accessories and the essentials your boat actually runs on.

Walk-in shop
Kos Marina
Open Mon – Sun · 09:00 – 21:00
Tinned copper · waterproof terminals
Breakers · fuse holders · distribution
Marine batteries · isolators · cables
LED bulbs · nav lights · deck lighting
Panels · MPPT controllers · monitors
Bilge pumps · float switches
Crimping · heat shrink · repair kits
Looking for a specific part? Message us on WhatsApp before you walk over — we'll check the shelf for you.
Why Autonautics
Six reasons captains, owners and fleet managers ring us first when something goes dark on board.
Walk-in support and a real shop on the pier — not a call-out from the mainland.
Hands-on with yachts, motor boats, sailing vessels and charter fleets.
Proper marine diagnostic tools and a clear order of work — less downtime.
Tinned copper, proper IP-rated connectors, components built for salt air.
Same care whether it's your boat or a fleet operator preparing turnovers.
We explain the issue, the fix and the cost before we open anything up.

On the pier · Kos Marina
“If you can hear our compressor humming, you're in the right place.”
About Autonautics
Autonautics supports yacht owners, captains, crews and charter companies with reliable marine electrical repairs, installations, troubleshooting and supplies.
Whether you're preparing for departure, dealing with a power issue, or hunting for the right part, our team is based directly inside Kos Marina — so help is a short walk down the pier, not a drive from town.
From shore-power connections to complete electrical rewires, we use proper marine-grade components and document the work so the next person to open that panel knows exactly what they're looking at.
Built around
Find Us
Convenient for sailing crews, marina visitors and boat owners who need quick support — or to grab a part on the way back to the boat.
Coordinates
36.89°N · 27.29°E
Address
Working hours
Parking & access
What people say
A few of the reviews captains, owners and fleet managers have left us on Google.
Diagnosed our shore power fault in minutes and had us safely connected before the next leg. Straightforward people.
Captain Michael S.
S/Y Aegean Dream
Solved a stubborn battery issue on the morning of departure. Walked us through what was wrong and what to watch for.
Sarah & Tom K.
M/Y Blue Horizon
Reliable shop in the marina — they usually have what we need on the shelf, and prices are fair.
Dimitris P.
Charter fleet manager
Installed our solar setup end-to-end. Cabling is clean, labelled, and the controller is exactly where it needs to be.
Johan & Lisa M.
S/Y Nordic Wind
Quick response for a bilge pump wiring problem. Done properly, not a quick patch.
George V.
M/V Poseidon
Re-wired our nav instruments — proper marine connectors throughout. Everything labelled at both ends.
Anna & Chris W.
S/Y Wanderer
On Google
Read more reviews — or leave one if we helped you out.
Get in touch
The form below opens WhatsApp with your details ready to send. For anything urgent, call us directly.