Floating nuclear power reactor with a self-cooling containment structure

A floating nuclear power reactor, comprising:

• a floating vessel having a bottom positioned beneath the water level of a body of water, sides extending upwardly from said bottom, and an upper end which is positioned above the water level of the body of water;
• a nuclear power reactor supported on said vessel;
• at least a portion of said nuclear power reactor being submerged in the body of water;
• said nuclear power reactor having a lower end, an upstanding side wall, and an upper end;
• a water passageway, having inner and outer ends, extending through said floating vessel and into said nuclear power reactor;
• a normally closed hatch movably associated with said water passageway;
• said hatch being movable between a normally closed position and an open position;
• said hatch, when in said closed position, closing said water passageway;
• said hatch, when in said open position, permitting water from the body of water to flow inwardly through said water passageway into said nuclear power reactor;
• a latch associated with said hatch which is movable from a latched position to an unlatched position;
• said latch, when in said latched position, maintaining said hatch in said closed position;
• said latch, when in said unlatched position, permitting said hatch to move from said closed position to said open position;
• and a condition responsive actuator positioned within said nuclear power reactor which causes said latch to move from said latched position to said unlatched position upon a condition within said nuclear power reactor reaching a predetermined level.