It is a time service system designed for various types of ships independently developed by Yantai Clock and Watch Research Institute Co., Ltd. It has passed CCS type approval. The master clock controls the slave clock to run synchronously. It uses external standard time signals such as GPS/Beidou to automatically calibrate the time, automatic AC/DC switching power supply, interface diversity and standardization. The system has a high degree of automation, strong interconnection and interoperability, high timekeeping accuracy, and convenient and fast operation and maintenance. Its successful development has ended the history of my country's long-term dependence on imports of master and slave clocks. In recent years, after continuous upgrading and innovation, the BKJ3 ship time control system based on Ethernet transmission has been developed. The clock system equipment is based on Ethernet transmission and uses POE power supply, which has brought the master and slave clock control technology to a new height and has been favored by the majority of users. This product has been widely used in navigation, transportation, fishery, military, scientific investigation, petrochemical and other fields and various types of ships.

Applicable ships: various cargo ships (including chemical ships, liquefied gas ships, cement ships, etc.), scientific research ships (Yuanwang No. 1, No. 2, No. 3, Dayang No. 1, South China Sea scientific research ship, Dongfanghong, etc.), ferries, tankers, drilling platforms, warships, marine surveillance ships, engineering ships, etc. Among them, the Yuanwang scientific research ship has participated in the Shenzhou series of space missions and scientific research missions such as satellite launches and missile launches.

SY5 series of marine timing instruments are special timing instruments developed independently by Yantai Clock and Watch Research Institute Co., Ltd. in the 1970s for the navigation, earthquake, astronomy, military and other industries. There are SY5C ship clock, SY5T astronomical clock, SY5B room report clock, SY5Q submarine clock, BKQ inclinometer and other models. The development of this series of products has ended the long-term dependence on imports of precision timepieces for ships in my country. This series of products is a single clock, which has been favored by users for its high timing accuracy, stable and reliable quality, high cost performance, and convenient use and maintenance. Our company's marine products have passed CCS type approval. Over the past forty years, this series of products has been widely used in navigation, transportation, fishery, military, scientific investigation, petrochemical and other fields, and has been used for various military and civilian ships (naval ships, ocean-going cargo ships, passenger and vehicle ferries, oil drilling platforms, tankers, scientific research ships, satellite detection ships, etc.) in many countries.