There needs to be a 'select all Naval units hotkey'

Just finished a long Island game where i struggled to keep track of my units. I was so frustrated were at the end of the game I find I was fighting with less than half of my units, a problem I hardly ever encounter on land maps.

Is there a legitimate reason for the absence of this hotkey or is this just oversight from the devs? Devs please include this in the coming patch.