Canoe Motor System

I am going to build the Canoe Motor System:
12volt system:
(2) x Basic ESC[
(1) Thruster Commander
Full Throttle Current (Power) @ 12 V 16.9 Amps (202 Watts) 2x thrusters 38.8amps
12volt 50AH Lithium Polymer
What is the thrust in lbs I can get?

Pls Confirm. And thanks.