coupling a vessel to a wave energy conversion (WEC) device adjacent to an upper surface of a body of water, the vessel comprising a support structure, a first floatation chamber coupled to the support structure, a second floatation chamber coupled to the support structure, the second floatation chamber laterally spaced apart from and fluidly coupled to the first floatation chamber, a third floatation chamber coupled to the support structure, the third floatation chamber laterally spaced apart from the first floatation chamber and from the second floatation chamber, and a robot system coupled to the support structure, the robot system comprising an end effector, and a nozzle head coupled to the end effector, the coupling comprising positioning the WEC within a footprint defined by the first floatation chamber, the second floatation chamber, and the third floatation chamber, and connecting the nozzle head of the vessel to a nozzle of the WEC;

transferring a chemical from the WEC to the vessel; and

at least one of (i) storing the chemical on the vessel, or (ii) forming a chemical fuel on the vessel using the chemical, or (iii) dispensing the chemical from the vessel to a location beneath the upper surface of the body of water.