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 Forces a given point on the stern down to a given height above the water. ```proj skypt `Forces a given point on the stern down to a given height above the water. `Note: Beginning with version 8.16 this can also be done with a negative `ground reaction. read fv `Initial condition: draft = 7 vcg = 8 solve weight, lcg `The given point: part hull ref = 40, 0, 12 `The desired height of this point above the water: variable wantht set wantht = 2.0 `The point at which the weight is applied is given in the ADD command below. macro try ADD "Downward force at stern", {f}, 40a, 0, 12 /nowarn `message trying force = {f} solve set dh = {height} minus {wantht} if {dh} > 0 then set f = {f} plus {df} else set f = {f} minus {df} set df={df} mult 0.6 / variable f,dh,df set dh = {height} minus {wantht} set f = {fweight} div {depth} times {dh} div 2 set df = {f} div 2 \ Initial height: {height:2} .try (15) \ Final height: {height:2} status ``` Add a free link to your site