Kayacat 6kg
Solar Panels 60kgs
Weight: 80-100kg
Anchor
Underwater Propulsion
Plastic: we can use gel coat to prevent sea life for growing on it https://www.bottompaintstore.com/blog/bottom-paint/bottom-paint-polyethylene/
How much thrust? 5lbs
A general rule is that 5lbs of thrust for every 200lbs of weight (including boat, people and equipment).
Got the blue robotics thrusters https://bluerobotics.com/store/thrusters/t100-t200-thrusters/t200-thruster-r2-rp/
I will need 100W for 2.2kg of thrusts
Got bifacial so that if the boat flips we still get energy
405W 72 Cell Mono PERC Bifacial Double Glass Half Cell Silver Frame
datasheet