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Submarine's Sea Monster Witness
- The first submarine to circle the globe was spotted only by a Filipino kayaker who mistook its periscope for a sea monster.
- He quickly painted saints' names on his boat for protection, coincidentally near the submarine's start and end point.
Nuclear Subs' Air and Limits
- Nuclear submarines can generate their own oxygen from seawater, allowing months underwater.
- Yet practical limits exist like expressed discomfort, dirty clothes, and dealing with onboard rubbish.
Silent Submarine Waste Tips
- To avoid detection, submarines carefully manage waste disposal and noise, even pre-breaking eggs before tossing them overboard.
- Bubbles are diffused before release to avoid forming a visible plume at the surface.