Goal Keeper Pattern

This pattern is normally used with a casualty that is moving fast.  It is often used in a multi-vessel search as a support to other patterns.  

Note :   It is always down drift of where we think the casualty can possibly be, so the casualty can drift towards the Rescue vessel.

•A : The Datum or Start position which can come from

otype in your own coordinates (see Coordinate input in the Important information section) - this will tell SearchWell where to start the pattern

opreviously calculated Datum positions - when you click on the circle to the left of "Calculated Coordinate" a list of the last calculated Datum positions is displayed and you can select the one you need by clicking on it.  In this case the LKP position related to the Datum is displayed.  The Datum position will be in the middle of the leg length.

•B : Distance from Datum : normally a Goal Keeper search is started down-drift of the Datum position, and so the default value of zero needs to be changed to a positive number.  If you want to

ostart closer to the LKP position (up-drift) then enter a negative number of nautical miles

ostart down-drift of the Datum position then enter a positive number of nautical miles

•C : The drift bearing which will guide the bearing of the pattern. 

oIf you entered your own Start Coordinates, you must enter your own bearing.  

oIf you selected a previously calculated Datum position then the drift bearing from that calculation will be displayed

•D : The speed the rescue vessel will average during the pattern execution

•E : Search Minutes - this is not used for the Goal Keeper search pattern

•F : The leg distance - this is compulsory for the Goal Keeper pattern

•G : Track Spacing - this is not used in the Goal Keeper pattern

•H : Arc Angle - this is not used in the Goal Keeper pattern

•I : clicking on this "Calculate" button will calculate the search patterns using the information in the header

•J : Click on the circle to the left of "Goal Keeper"

•K : If the value in the "Distance from Datum" is zero, then SearchWell prompts you to change it to a positive number so that it is down-drift from the Datum Position

•A : when you have changed the Distance from Datum and clicked on the Calculate button the patterns will be recalculated and the output displayed

•B : Click on the Calculate Button

•C : click on the circle to the left of "Goal Keeper"

•D : the details of each leg of the pattern

oUse - this column contains "y" by default and it means that the leg will be included in the GPX file that is created and sent to the vessel.  All the legs of a Sector should always be included in the GPX file

oLeg - the leg number

oDist - the distance of the leg in nm

oBear - the bearing of the leg from leg start point to leg end point

oMins - the number of minutes the leg will take to complete given the rescue vessel speed

oTot Mins - the total number to minutes that will have been used to get to the end point of the leg

oDD Coords - the coordinates of the turning point in Decimal Degrees

oDDM Coords - the coordinate of the turning point in Degrees and Decimal Minutes 

•E : The Total Stats in this case are not really relevant as the pattern will be performed over and over until the search is called off

•F : Click on this button to create the GPX file that can be imported into Google Earth Pro and can be sent to the rescue vessel to be loaded into the navigational device on board the vessel

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