Hobbywing Seaking 60A Brushless ESC for Boat (Version2.0) with Water Cooling System 

"Seaking" series ESC has water-cooling heat-sink and the whole ESC is waterproof.

1 Features

1.1 Excellent waterproof design (rates as IP 67) allows this ESC to work in water without any extra precautions;
1.2 High quality components have very strong over-current withstanding capabilities;
1.3 Patented Copper Heat Conduction technology and high-efficiency water cooling system can easily dissipate the heat produced in operation under high load;
1.4 The special firmware designed for RC boats can make the acceleration punchier and the sailing more stable;
1.5 The External Programming Port can connect to the LED Program Box for easily setting the parameters of the ESC; 
1.6 Multiple protections like low-voltage cutoff protection, thermal protection and throttle signal loss protection, make the ESC more reliable;

2 Specification

2.1 Continuous Current: 60A
2.2 Peak Current: 360A
2.3 Input: 2-3S Lipo
2.4 BEC Type: Linear Mode
2.5 BEC Output: 6V/2A
2.6 External Programming Port: Available
2.7 Boat Applicable: Boat length <70cm
2.8 Water Cooling Pipe (Inside / Outside): Ф2.0 / Ф4.0
2.9 Size (Include the Water Cooling Pipe): 60.5X38.5X25.6mm
2.10 Weight: 93g