YDK Technologies Co., Ltd.

YDK Technologies Co., Ltd. is a Japanese company based in Tokyo that designs, produces, and sells marine navigation equipment. According to its official website, the company contributes to the safe navigation and energy saving of ships through products such as gyrocompasses, autopilots, and electromagnetic logs. Its product portfolio includes the CMZ900 series gyrocompass, the PT900 series autopilot, and electromagnetic log systems for measuring ship speed and distance traveled. The company describes itself as serving measurement needs across several business domains: meteorology and hydrology, navigation, aviation, combustion, and defense. Its management philosophy emphasizes supporting the safety and security of people and contributing to a thriving global society. YDK Technologies positions itself as a group of technologists that adds originality and ingenuity to cultivated technologies and co-creates beyond corporate frameworks. YDK Technologies maintains a service network and publishes notices regarding product support, including discontinuation of service parts for the CMZ700 series and the TMC unit (MPC430) and Assist monitor (MHR112). The company has also issued security notices about suspicious emails impersonating its name. Its primary customers appear to be commercial vessel operators and maritime industry stakeholders requiring reliable navigation and measurement equipment.

YDK Technologies Co., Ltd. is a Japanese company headquartered in Tokyo. While the exact founding year is not provided in the available evidence, the company has established itself as a manufacturer of marine navigation equipment. Its official website describes a management philosophy centered on supporting the safety and security of people and contributing to a thriving global society. The company states that it provides new value by adding originality and ingenuity based on technologies cultivated in the meteorology and hydrology, navigation, aviation, combustion, and defense businesses, and by co-creating beyond corporate frameworks. Over the years, YDK Technologies has developed and supported a range of navigation products. The CMZ900 series gyrocompass, PT900 series autopilot, and electromagnetic log systems are among its current offerings. The company has also maintained older product lines, as evidenced by notices regarding the discontinuation of service parts for the CMZ700 series and the TMC unit (MPC430) and Assist monitor (MHR112). These notices indicate a long-term presence in the marine equipment market with a focus on product lifecycle support. The company operates a service network, with updates posted as recently as July 2026. It has also issued security notices regarding suspicious emails impersonating its name, demonstrating an active effort to protect its brand and customers. YDK Technologies continues to position itself as a group of technologists dedicated to meeting customer measurement needs across multiple industries.

• Important Notice Concerning operation of PT500 Autopilot system in event of emergency alarm

• Revised periodical replacement of potentiometer(s) on Autopilot system model PT500/PT70/PT900

• Precautions when removing the sensor of EM Log system

• Discontinuation notice of TMC unit(MPC430) and Assist monitor(MHR112)

• Posted Corporate Code of Conduct

• Notice Regarding Discontinuation of Service Parts for CMZ700 series

• Posted updated list of Service Network for July 2026

A technology-driven Japanese manufacturer focused on marine navigation and measurement solutions, emphasizing safety, energy saving, and co-creation.

• CMZ900 series gyrocompass

  Provides three types: CMZ900B (B2) standalone for small merchant vessels, CMZ900S single gyrocompass for general merchant vessels, CMZ900D dual gyrocompass for general merchant vessels.

• PT900 series autopilot

  Applicable for all types of steering gear for general merchant vessels.

• Electromagnetic log

  Measures ship's speed and indicates distance traveled; available with single-axis or dual-axis sensors.

1. 1YDK Technologies official website (English)ydktechs.co.jp
2. 2YDK Technologies official website (English index)ydktechs.co.jp
3. 3Products│YDK Technologiesydktechs.co.jp
4. 4YDK Technologies security noticeydktechs.co.jp
5. 5Wikidata entry for YDK Technologies Co., Ltd. (Japan)wikidata.org