The root keel prim has a note-card inside that allows you to change different parameters. (Each sail also has a .sailparams NC, see the sails page for information on that). The root prim of the boat has parameters like the friction with water and the forces from the different sail types. The sails themselves have mostly size and sound parameters.
The note card in the keel is named .params and it understands the following list of parameters. This is evolving and if you need something added to this, let me know. Each line in this file is supposed to look like a LSL statement: Lines starting with // are comments, each NAME=VALUE pair must be on a line by itself. Semicolons and comments are optional. Symbolic values like ZERO_VECTOR are not supported.
//parameters read from the .params file pilotsit=<-9.5, 0, 1.0>; //pilot sit position pilotrot=<0,0,0>; //Euler rotation of pilot fricwat=0.10; //friction with water, 0 to 1.0 fricgnd=0.55; //friction with ground, 0 to 1.0 accmot=0.10; //acceleration from motor in meters per second squared bankper=0.15; //percentage of motor thrust that goes into banking skyoff=2.0; //offset between center of boat to bottom of keel watoff=0.10; //distance from center of root prim to the water heelsquare=0.15; //percentage boat heels from side wind force on square sails accsquare=0.25; //efficiency of square sails accfaa=0.15; //efficiency of fore-and-aft sails (faa) heelfaa=0.05; //percentage boat heels from the for-and-aft sails heeljib=0.03; //percentage boat heels from the jibs accjib=0.15; //efficiency of the jib sails heelspin=0.10; //percentage boat heels from the spinnaker accspin=0.25; //efficiency of the spinnaker minset=10.0; //minimum sheet set angle maxset=90.0; //maximum sheet set angle maxride=3; //max ride mode, 1=private only, 2=free ride, 3=captain hullwidth=1.0; //half the width between hulls on a catamaran maxhealth=1000; //the health of the ship when not damaged at all repair=1; //how many health points are added every second for repairs takedamage=1; //if set to zero, the ship will ignore cannonballs and other weapons
heeljib, heelfaa, heelsquare, heelspin These should also be numbers between 0 and 1. If they all sum to 1.0, a wind of 1m/s would tilt the boat over by 45 degrees (if all the sails were facing in the wrong direction to the wind). So small numbers here are best. This angle falls off rapidly with increasing wind speed and can never tilt the boat over 90 degrees in this simulation.
Pick nice numbers and try out the boat! If the acceleration from wind too is too quick for a large boat, then decreased accfaa. If the boat drifts too far after furling the sails, increase fricwat. A low fricgnd value will allow your boat to sail on the ground in an unnatural way, but it should be low enough to allow you to launch off a beach or recover from running aground.
hullwidth: This parameter should be set to near zero for a small boat, larger numbers to make large boats rise a little as they heel. This number should be set to half the distance between hulls on a catamaran.
accmot This is acceleration from the motor. If your boat does not have a motor, set this to 0.0
CameraPitch = 10.0; CameraDistance = 6.0; CameraBehindnessAngle = 0.0; CameraBehindnessLag = 0.6; CameraLag = 0.3; CameraFocusLag = 0.05; CameraFocusOffset = <0,0,0.4>; CameraFocusThreshold = 0.3; CameraPositionLag = 0.3; CameraPositionTreshold = 0.0;