RYOKUSEISHA is a comprehensive manufacturer of
aids to navigation (AtoN), radio buoys, and satellite buoys.
We provide tailored, end-to-end solutions—from equipment selection and custom engineering to
installation and dedicated after-sales support—ensuring the perfect fit for your marine needs.
Striving for ultimate user convenience in everything we do.
Customizable to your needs, from minor tweaks to complete custom engineering.
To meet the diverse requirements of our clients, customization is our standard approach. We deliver optimized products tailored to specific meteorological and oceanographic conditions, legal frameworks, and any other unique demands of your deployment area.
Furthermore, we have an extensive track record in custom engineering—designing completely original solutions from scratch when no match exists in the market. We invite you to take advantage of our complimentary consultations with experienced marine technology experts.
Products & Services
Line of Business
- Aids to Navigation (AtoN): Light Buoys & Marine Lanterns
Port & Harbor Construction, Oceanographic & Marine Research, Fisheries & Aquaculture - Aids to Navigation (AtoN) Accessories & Components
(GPS Synchronized Flash Controllers and more) - Commercial Fishing Buoys: Radio & Satellite Systems
- Vessel Monitoring System
- Metocean Observation Systems
Main Customers
| Government and municipal offices | Ministry of Land, Infrastructure, Transport and Tourism, the Ministry of Agriculture, Forestry and Fisheries, Ministry of Education, Culture, Sports, Science and Technology, Meteorological Agency, Coast Guard and Port Authority. |
|---|---|
| Public organizations and schools | Municipal corporations, universities, and fisheries high schools. Public corporations, administrative divisions (civil engineering works and fisheries), and municipal ports. |
| Civil engineering works, constructions and others | Kansai International Airport Co., Ltd., Trans-Tokyo Bay Highway Corporation, Independent administrative agencies, Electric power supply companies, Shipyards, General construction companies, Marine construction companies. |
| Fishing relation | TAIYO A&F CO., LTD., Kyokuyo Suisan Co., Ltd., Fukuichi Gyogyo Co., Ltd., FURUNO ELECTRIC CO., LTD., Global fishing companies. |
| Countries | JAPAN, TAIWAN, KOREA, PHILIPPINES, INDONESIA, VIETNAM, CAMBODIA, THAILAND, MALAYSIA, SINGAPORE, AUSTRALIA, NEW ZEALAND, PNG, SRI LANKA, INDIA, SEYCHELLES, GHANA, SPAIN, FRANCE, UK, USA, ECUADOR, PANAMA, UAE |
Product Planning, Design & Development
Fueled by our in-house capabilities and a specialized proprietary network, we provide seamless, end-to-end integration for your maritime assets:
- Hardware Engineering: Mechanical design, custom optics, and robust circuitry.
- Software Development: Proprietary firmware, telemetry protocols, and control systems.
- Tailored Flexibility: Fully optimized for both minor modifications and comprehensive, from-scratch full-order projects.
Custom Engineering Examples
Flotation Platforms for Water Quality Buoys
We design optimal floats and enclosures tailored precisely to your specific operational requirements.
Radar Reflectors
Trust us to design high-visibility radar reflectors, essential for indicating positions to oncoming vessels.
Custom Control Systems & Panels
Contact us for custom control panels to centralize multiple AtoN systems, including bridge lights. We have a proven track record near bridges and airports.
Software Engineering Examples
Buoy-MAX NEO
Web-Based Vessel Station App for Satellite Buoy SV-6000L
By transitioning from traditional PC-only software to a web-based system, you can now operate it seamlessly via smartphone or tablet. Highly recommended for Starlink-equipped vessels.
BMOP (Buoy-MAX Operating Plotter)
Dedicated Satellite Buoy Vessel Station Software
Our flagship vessel software covers all features from GPS tracking to fish finder data, supporting satellite, internet, and plotter transfers.
VMS (Vessel Monitoring System)
Vessel Tracking & Catch Reporting Software
Utilizing GPS and Inmarsat satellite communications, this system manages vessel tracking and catch reporting, displaying location and harvest data on the shore-based BMOP platform via the internet.
Consulting Services
Our experienced consultants provide the optimal solutions tailored to solve your specific challenges.
Equipment Selection & Custom Optimization Support
Tailoring equipment selection and customization to perfectly match your sea-site conditions.
Tell us your sea-site conditions (depth, waves, currents, wind). We’ll recommend the optimal AtoN equipment and tailor it to your budget and scale.
Custom-Engineered Solution Consulting
Bringing non-existent solutions to life from the ground up.
We provide expert consulting to develop custom hardware and systems tailored to specialized applications and harsh operational environments. Beyond standard advisory work, such as initial research and technical analysis, we offer seamless, end-to-end solutions—encompassing custom design from scratch, manufacturing, on-site installation, and lifecycle after-sales support.
Initial consultations are fundamentally complimentary. We will explicitly communicate any steps that require fees and ensure a clear consensus is reached before proceeding, allowing you to consult with us with complete peace of mind.
Examples of Custom-Engineered Solutions
Trusted by fishermen, government agencies, and fisheries schools for full-custom solutions. We excel in equipment downsizing, with proven success in compact wave gauges.
Mooring Buoys
Designed for reliable vessel mooring. We custom-engineer the perfect buoy shape and specifications based on vessel tonnage and site conditions. If details are unavailable, our team can perform an on-site technical survey.
Track Record & Delivery Highlights
| Model | MBP | MB-08 | MB-23 | MB-35 |
|---|---|---|---|---|
| Height Overall | Approx. 1.7 m | Approx. 0.8 m | Approx. 1.5 m | Approx. 2.2 m |
| Float Diameter | Approx. φ0.45 m | Approx. φ0.8 m | Approx. φ2.3 m | Approx. φ3.5 m |
| Total Weight | Approx. 18 kg | Approx. 120 kg | Approx. 2.1 ton | Approx. 5.0 ton |
| Reserved Buoyancy | Approx. 0.9 kN | Approx. 1.4 kN | Approx. 29.4 kN | Approx. 123.5 kN |
| Projected Area | 0.201 m² | 0.302 m² | 1.756 m² | 4.793 m² |
| Main Material | Float: Urethane-coated styrofoam | Steel | ||
Unlighted Buoys
Unlighted buoys for daytime use in rivers and harbors where no ships pass during nighttime.
Track Record & Delivery Highlights
| Model | MB-13L | MB-13R | MB-30L | MB-30R |
|---|---|---|---|---|
| Height Overall | Approx. 2.4 m | Approx. 2.2 m | Approx. 2.7 m | Approx. 2.2 m |
| Float Diameter | Approx. φ1.2 m | Approx. φ1.2 m | Approx. φ1.6 m | Approx. φ1.6 m |
| Total Weight | Approx. 1.1 ton | Approx. 0.6 ton | Approx. 1.7 ton | Approx. 0.9 ton |
| Reserved Buoyancy | Approx. 12.7 kN | Approx. 3.9 kN | Approx. 28.0 kN | Approx. 9.5 kN |
| Projected Area | 1.414 m² | 0.717 m² | 2.274 m² | 1.217 m² |
| Colors | Green | Red | Green | Red |
| Main Material | Steel | |||
Water Quality Monitoring Buoy Platforms
We delivered a full-custom monitoring light buoy designed to accommodate additional fish finder transducers and communication modules, successfully meeting the client’s request for a highly minimized and compact body size.
