Measures a trawl system's warp tensions, door spreads and net openings, as output ports and on the HUD.

Collaboration diagram for Trawl info reporter:

Author: Karl-Johan Reite

Net N hangs between door N (port) and door N + 1 (starboard) and is towed by warps N and N + 1, so NumNets nets have NumNets + 1 doors and warps. Every value is filtered over the last FilterSteps accepted steps; the first accepted step fills the filter. Spreads and widths are horizontal distances, heights vertical distances.

Example configuration excerpt

<Lib LibName     = "fishery"
   SimObject     = "Trawl/TrawlReporter"
   Name          = "TrawlReport"
   FilterSteps   = "30"
   Corner        = "TopLeft"
   NumNets       = "1"
/>

Configuration parameters

Name	Width	Description
NumNets	1	The number of trawl nets, side by side.
FilterSteps	1	The number of accepted steps the outputs are filtered over (Default: 30).
Corner	1	The HUD corner of the values: TopLeft, TopRight, BottomLeft or BottomRight (Default: TopLeft).

Input ports

Name	Width	Description
Warp<N>Force	3	Force of warp N [N].
Door<N>Pos	3	Position of door N.
Net<N>UpperStb	3	Position of the upper starboard wing of net N.
Net<N>UpperCenter	3	Position of the centre of the headline of net N.
Net<N>UpperPort	3	Position of the upper port wing of net N.
Net<N>LowerStb	3	Position of the lower starboard wing of net N.
Net<N>LowerCenter	3	Position of the centre of the fishing line of net N.
Net<N>LowerPort	3	Position of the lower port wing of net N. @addoption{Net<N>BottomContact, 6, The `BottomContact` output of net N (Net/NetStructure): the seafloor force on the net [N] in elements 0 to 2, NED; elements 3 to 5 (the moment) are not used.}

Output ports

Name	Width	Description
WarpTensions	<NumNets+1>	Warp tensions [N].
OuterDoorSpread	1	Spread between the outermost doors [m].
DoorSpreads	<NumNets>	Spread between the doors of each net [m].
NetHeightsCenter	<NumNets>	Net heights at the centre [m].
NetHeightsPWing	<NumNets>	Net heights at the port wing [m].
NetHeightsSWing	<NumNets>	Net heights at the starboard wing [m].
NetWidthTop	<NumNets>	Net widths between the upper wings [m].
NetWidthBottom	<NumNets>	Net widths between the lower wings [m].
NetSeafloorPressure	<NumNets>	Vertical force from the seafloor on each net [N].
NetSeafloorFriction	<NumNets>	Horizontal force from the seafloor on each net [N].

Initial conditions

This simobject has no initial conditions.

This SimObject is referred to as Trawl/TrawlReporter