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

Table 2

Unit and remark of fields.

Field name	Unit	Remark
PCDate	YYYY-MM-DD	Record date
PCTime	hh:mm:ss	Record time
MEActFOCons	kg/h	ME fuel oil consumption rate
DGActFOCons	kg/h	DGs fuel oil consumption rate
BlrActFOCons	kg/h	Boiler fuel oil consumption rate
DG1Power	kW	Power of no.1 DG
DG2Power	kW	Power of no.2 DG
DG3Power	kW	Power of no.3 DG
MERPM	r/min	ME shaft revolution speed
METorque	kN∗m	ME shaft torque
MEShaftPow	kW	ME shaft power
ShipSpdToWater	Knot	Water referenced speed
ShipSpd	Knot	Ground referenced speed
ShipHeel	m	Draft port-draft starboard
ShipTrim	m	Draft rear-draft front
ShipDraft	m	(Draft rear + draft front)/2
WindSpd	Knot	Relative wind speed
WindDir	^o	Relative wind direction
Latitude	^o, ’, ” (N/S)	Latitude
Longitude	^o, ’, ” (E/W)	Longitude
ShipSlip	%	Slip ratio of propeller
MESFOC_kw	g/kWh	ME fuel consumption/kW (power)
MESFOC_nmile	kg/nautical mile	ME fuel consumption/knot (speed)