This is Tsunami X made by TheWorms, remake of the Original Tsunami map in RA2

from the official description:
Features:  Each player will start off on his or her own private island (4 total). This is a great map for those that like to have long naval battles.
Tip: Money will be consumed quickly, make sure you monitor your resources and don't over spend. It will be crucial to build Naval ships immediately and secure the islands perimeter.

Notes:
-Oil Derricks are located at the center of the map.
-Expansion ore nodes are protected by creep dolphins! Be sure to kill them first.
-Some dry docks at each corner of the map to help naval repair
-This is a special variant of Tsunami Redux. Aside from the derricks located at the center of the map, they are protected by Tesla Coils and the Mecha King.
-The Mecha King will spawn at the center every minute, and its roar will be heard everytime it is resurrected. It will attack anything in its path, unless you are within the boundaries of your island.
 