Can I play a game on a second device with the same profile with out starting over? I have been playing boom beach on an android tablet. The tablet is no longer accessible to me. Can I play the game on another android tablet without starting over?
If you signed into you Google+ account while playing the game, then progress is synchronised across to the second device.

While playing the game, sign into your Google+ account on the second device. This will give you the option to load your existing progress.

If you didn't sign into to your Google+ account on the first device, then I'm afraid it isn't possible without access to the device.