Just had my boat worked on and running took it out on the lake and in 30min boat shuts off and won't turn over.

Turn key and I get a beep and power to all gauges, when I go to turn the key to start the engine I had someone Liston to the starter relay and it does click.

What's next down the line to look for?
Starter does not make a single noise

probably that relay. jump across the 2 big terminals on top of it.

Did the engine shut down on it's own? Did you shut it off and it will not crank? If you shut it off and when you went to restart it would not crank but heard just a click from the relay, just hold the key switch in the crank position and whack the starter motor with a piece if 2x4 or rubber dead blow hammer. Now if it just died and won't crank you may have an engine or drive failure.

IMHO Should have kept this on your current thread:
http://www.offshoreonly.com/forums/g...tting-off.html

What was your battery voltage gauge at? Did they replace any of the batteries? Since the initial fix was thought to be mis-wired batteries and a non-working alternator. I am thinking you have more electrical problems then what were fixed. I believe some relays were replaced as well? Do you know which ones?