Engine 2014: Electricity

1. A all ship's service alternators have additional temperature sensing devices and a thermal recorder installed
2. B machinery on deck and in the engine room is first coated with zinc chromate before final painting
3. C the hull's magnetic fields are aligned with a solid- state degaussing circuit using SCR's
4. D straps connect the rudder with the hull and the propeller shaft is grounded through a slip ring/brush arrangement

Tip: press A-D to answer