Any water cooled engine has water jackets. Don't want your engine to get cold LOL
Yellow jackets -- indeed, all insects -- are like all other animals; they need water to drink.
Yes, life jackets are designed to save life regardless of how deep the water is. Lifejackets will float well in any depth of water.
Water repelling ability is the top priority for fabrics intended for making rain jackets, eVent and silnylon are often used for making rain jackets because of their water repelling properties.
Water jackets are the hollowed out spaces in the engine block and head through which the coolant flows. In water jackets, waste heat generated by the engine is picked up by the coolant. After flowing through the water jackets, water flows through the radiator. The radiator is basically a heat exchanger which, through a system of tubes and fins, transfers this waste heat from the coolant to the atmosphere. After the water is cooled in the radiator, it flows back into the water jackets of the engine to pick up more waste heat.
your coolant flows through them.
"Gore-Tex jackets offer water-proof, breathable protection that is soft to the touch, yet is resilient. The Gore Tex jackets are available for men and women."
the hot water temperature will not reduce due to atmosphere temperature.
because of the air in the jacket
The stratosphere contains almost no water vapor.
ocean water contains many
They don't "prevent" anything. They provide hot water , usually as needed.
Water that contains salt is salt water. it contains salt and minerals.