I was going to replace it because the seller say the faucet does not work and i took his word for it. The faucet was unhook and last night i put it back together to troubleshoot and it work just fine.
Just missing the screw ring to hold down the knob but i believe i can find the screw ring at lowes or HD..
Check the aerator - it may have just been plugged and the debris that was in there has dried out - allowing water to flow through... for now. That's very common on boats as some don't take care of their water system.