A Novel Big Data Collection System for Ship Energy Efficiency Monitoring and Analysis Based on BeiDou System

Table 1

Data acquisition from sensors.

Sensor	Data
Flow meters	Fuel oil consumption
Anemometer	Relative wind speed and direction
Doppler speed log	Water referenced ship speed
GPS receiving device	Ship position, ground referenced ship speed
Alarm system	DG power
Liquid level system	Ship draft
Shaft power monitor	Shaft speed, torque, and power