People Shocked in U.S. Swimming Pool.

One ship I was regularly on, when in floating dry-dock in Hamburg and thus sitting on wooden blocks, shore power - 3-phase, 3-wire 440v 60 Hz used to be connected into a shore connection in the Focsle. Thence back fed through the 3.3 kV 3-wire connection to the main switchboard where it was available for 440v and 220v distribution. The only actual users of 3.3 kV being the bow-thruster motor - about 1MVA (not needed in dry-dock) and four refrigeration compressors. (All these were D.O.L. started when in normal use.).  Due to welding works, there was always a cable between the ship's hull and the steel work of the floating dock.

I spent many happy time walking half bent over beneath the ship for such things as echo-sounders and speed-log.

 http://www.shipspotting.com/gallery/photo.php?lid=1529897


Clive

One ship I was regularly on, when in floating dry-dock in Hamburg and thus sitting on wooden blocks, shore power - 3-phase, 3-wire 440v 60 Hz used to be connected into a shore connection in the Focsle. Thence back fed through the 3.3 kV 3-wire connection to the main switchboard where it was available for 440v and 220v distribution. The only actual users of 3.3 kV being the bow-thruster motor - about 1MVA (not needed in dry-dock) and four refrigeration compressors. (All these were D.O.L. started when in normal use.).  Due to welding works, there was always a cable between the ship's hull and the steel work of the floating dock.

I spent many happy time walking half bent over beneath the ship for such things as echo-sounders and speed-log.

 http://www.shipspotting.com/gallery/photo.php?lid=1529897


Clive