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Professional-Grade Marine Navigation with Integrated Class B+ AIS
Navigate with ultimate confidence using the ONWA KP-27A 7-Inch Marine GPS Chart Plotter. Engineered for harsh marine environments, this high-performance navigation hub integrates a built-in Class B+ AIS Transponder, leveraging SOTDMA technology to deliver higher transmit power and more frequent position updates than standard Class B systems.
Engineered for the Open Sea
- Sunlight-Readable Display: The 7-inch high-resolution TFT color LCD is optimized for maximum visibility under direct, intense sunlight, featuring an anti-reflective matte finish.
- IP66 Waterproof Integrity: Enclosed in a rugged, UV-stabilized high-impact ABS housing designed to withstand heavy spray, continuous washdowns, and salt-air corrosion.
- Tactile Control System: Equipped with heavy-duty, backlit silicone buttons and an ergonomic directional pad, allowing precise setting adjustments even when wearing gloves or in rough seas.
Robust Connectivity & Fitment
The unit supports standard NMEA 0183 protocols, allowing seamless integration with onboard depth sounders, VHF radios, and wind sensors. Ready for bracket or flush mounting on fiberglass, aluminum, or wood consoles.

Frequently Asked Questions
- Will the display wash out or become unreadable under intense direct midday sunlight?
- No. The ONWA KP-27A is engineered with a high-luminance, 7-inch daylight-viewable LCD featuring an advanced anti-reflective matte screen coating, ensuring clear navigation visibility and high-contrast reading even in direct midday sun.
- Can this chart plotter survive continuous exposure to heavy salt spray and high humidity?
- Absolutely. The device features a rugged, UV-stabilized ABS chassis sealed completely to IP66 waterproof specifications. All rear ports are gasket-sealed, and internal components are protected against heavy salt-spray and humid maritime air.
- How does the built-in Class B+ AIS differ from standard Class B systems?
- The integrated Class B+ AIS transponder utilizes advanced SOTDMA (Self-Organizing Time Division Multiple Access) technology. This provides a higher transmit power (5W vs 2W) and more frequent position updates compared to standard Class B systems, ensuring faster detection by commercial vessels in heavy traffic.
Engineering Specs
ESTABLISHED 2017
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