Engine & computer diagnostics
We use Volvo Penta VODIA and Mercury G3 computer diagnostics alongside hands-on inspection to investigate engine faults.
J.MARINE / MARINE SERVICE IN OKINAWA
Confidence for
every voyage.
Boat repair, maintenance and sales in Ginowan, Okinawa.
Engine diagnostics and marine electrical expertise.
Built on experience at sea in Okinawa.
DIAGNOSTICS · ELECTRICAL · MARINE SERVICESCROLL TO EXPLORE
KEEP YOUR BOAT READY
Technical expertise.
Experience at sea.
Based in Ginowan, Okinawa, J.Marine specialises in engine control systems, computer diagnostics and marine electrical work, including Volvo Penta VODIA and Mercury G3 connection diagnostics.
We also design and configure power systems that combine lithium-ion batteries, BMS settings and inverters as an alternative to conventional generators.
We have captained vessels throughout Okinawa and its islands. We combine practical seamanship with technical knowledge to understand how each vessel is used.
Dealerships & brands
Authorised dealer
Authorised dealer
Authorised dealer
Products available01 / OUR SERVICES
Complete support for your vessel.
Maintenance and support
matched to your vessel.
Marine electrical & equipment installation
Batteries, charging systems, onboard wiring and equipment installation. Our electrical expertise supports a practical and comfortable onboard environment.
Volvo Penta / Mercury dealership
As a Volvo Penta and Mercury dealer, we support engine enquiries with mechanical servicing and computer diagnostics.
Quick gyro stabilisers
An authorised Quick dealer with technical training in Italy. We provide knowledgeable support for gyro stabilisers.
Lithium batteries, BMS & inverters
We design lithium battery configurations, BMS settings, inverter and charging combinations, supporting marine power systems as an alternative to generators.
Boat repair: services and enquiry guide
From routine maintenance to boat sales
Haul-out, cleaning and antifouling / Engine and generator inspection / Marine AGlaze protective coatings / Boat repair and sales
Marine AGlaze is a protective treatment for GRP and painted surfaces, helping protect against UV, salt and dirt and supporting everyday care.
QUICK / TECHNICAL TRAINING
Technical training in Italy.
Practical support in Okinawa.
Our representative, Jigen Takaesu, completed Quick MC² gyro stabiliser technical training (Levels 1, 2 and 3) in Italy. We apply this expertise as an authorised dealer.
Certificate issued: 29 September 2023
Company on certificate: Boat Gyro Japan Co., Ltd.
Participant: Jigen Takaesu
02 / FROM THE YARD
Attention to every detail.
From hull and propellers to the whole vessel.
See our work in photographs.
Tap a photograph to enlarge it.
HOW WE WORK
Tell us about
your vessel.
Tell us about any symptoms or improvements you have in mind.
We start by understanding your vessel.
- 01
Enquiry & assessment
Tell us your vessel type, berth location and required work or symptoms. Photographs help us understand the situation.
- 02
Agreeing the work
We assess the condition and discuss servicing, parts and the next steps.
- 03
Service & reporting
We carry out the work and share a report with photographs.
03 / ABOUT J.MARINE
A technical partner
who knows Okinawa waters.
- Company
- J.Marine株式会社
- Representative
- Jigen Takaesu
- Address
- 〒901-2227
2-1-19-1F Uchidomari, Ginowan, Okinawa, Japan - Services
- Engine & computer diagnostics
Electrical work, installation, engine & generator inspection
Lithium batteries, BMS & inverters configuration
Haul-out, cleaning & antifouling
Marine AGlaze protective coatings
Boat repair & sales - Dealerships
- Volvo Penta
Mercury
Quick (gyro stabilisers)
LET’S TALK ABOUT YOUR BOAT
For your next voyage.
Talk to us about your vessel.
Please include the following details with your enquiry.
Email: info@jmarine-ltd.co.jp
- Vessel name, type and size
- Berth location and preferred timing
- Symptoms or requested work
- Photographs of the issue