Navigation and vessel motion parameters

These parameters describe the information from the relevant navigation and motion sensors connected to the EK80.

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Type = The variant type as defined for certain programming languages

–

V_R8 = double, 8 bytes

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R/O = Read only

Note

None of the parameters are "read only".

OwnShip / Speed

Description	Range	Unit	Type	R/O
This is the vessel’s speed.	<0,100>	m/s	VT_R8	No
Example:	5.6

OwnShip / Heading

Description	Range	Unit	Type	R/O
This is the vessel heading.	<-180,180>	deg	VT_R8	No
Example:	17.5

OwnShip / Course

Description	Range	Unit	Type	R/O
This is the vessel’s course.	<-180,180>	deg	VT_R8	No
Example:	17.4

OwnShip / Latitude

Description	Range	Unit	Type	R/O
Vessel latitude	<-90,90>	deg	VT_R8	No
Example:	64.353

OwnShip / Longitude

Description	Range	Unit	Type	R/O
This is the vessel’s geographical longitude.	<-180,180>	deg	VT_R8	No
Example:	5.23

OwnShip / Heave

Description	Range	Unit	Type	R/O
This is the vessel’s heave.	<-100,100>	m	VT_R8	No
Example:	-0.3

OwnShip / Roll

Description	Range	Unit	Type	R/O
This is the vessel’s roll.	<-90,90>	deg	VT_R8	No
Example:	2.1

OwnShip / Pitch

Description	Range	Unit	Type	R/O
This is the vessel’s pitch.	<-90,90>	deg	VT_R8	No
Example:	1.3

OwnShip / MotionData

Description	Range	Unit	Type	R/O
This is a combined array parameter that contains vessel roll, pitch, heave and heading.	<-90,90>	deg	VT_R8 VT_ARRAY	No
	<-90,90>	deg
	<-100,100>	m
	<-180,180>	deg
Example:	2.1, 1.3, -0.3, 17.5

OwnShip / VesselDistance

Description	Range	Unit	Type	R/O
This is the vessel’s sailed distance.	<0,1E9>	nmi	VT_R8	No
Example:	1.3

VesselDraft

Description	Range	Unit	Type	R/O
This is the vertical distance between the ship origin and the keel.		m	VT_R8	No
Example:

WaterLevelDraft

Description	Range	Unit	Type	R/O
This is the vertical distance between the ship origin and the water level.		m	VT_R8	No
Example:

DropKeelOffset

Description	Range	Unit	Type	R/O
The drop keel offset value is the vertical distance from the "upper" to the "lower" position of the drop keel.	<-100,100>	m	VT_R8	No
Example:	0

In the EK80 user interface, the Offset parameters recorded during the transducer installation are used to place the transducer in the vessel’s coordinate system, relative to the ship origo. The drop keel offset distance is automatically added to the transducer’s vertical X-offset.