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23.04.2021 4:07:20
Re: why do large boats always spit out water?
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Re: why do large boats always spit out water?
Many of the mega yatch have electrical generator onboard. This generator are water cooled and what you are seeing are the warm water discharge.
Max, those are the discharges for the air conditioning systems.
If you can bear a little bit of math, it's very easy to prove! We need to know two general bits of physics to do it. First, that pressure is defined as force per unit area (force divided by area), so the force on a given surface of the box is the pressure times the area of that surface. Second, that the pressure (P) at a given depth (h) in a fluid is equal to the depth times the density (ρ) times g (the acceleration due to gravity). Or P = h × ρ × g. more
Not all engine-powered boats use propellers. Jet Skis® and jetfoils (large, hydrofoil versions of jetskis) use engines to power impellers (water pumps) that create a powerful backwater-pointing jet of water. The force of the water shooting back into the water powers the boat forward, much like the hot exhaust gas from a jet engine.
The person who first worked out the answer was Greek mathematician Archimedes, some time in the third century BCE. According to the popular legend, he'd been given the job of finding out whether a crown made for a king was either solid gold or a cheap fake partly made from a mixture of gold and silver. One version of the story says that he was taking a bath and noticed how the water level rose as he immersed his body. He realized that if he dropped a gold crown into a bath, it would push out or "displace" its own volume of water over the side, effectively giving him an easy way to measure the volume of a very complex object. By weighing the crown, he could then easily work out its density (its mass divided by its volume) and compare it with that of gold. If the density was lower than that of gold, the crown was clearly a fake. Other versions of the story tell it a slightly different way—and many people think the whole tale is probably made up anyway!
Bigger boats don't suffer from this problem. First, they tend to have heavy metal engines very low down beneath the water level, which gives them a low center of gravity and makes them more stable. Second, they have a bigger keel (a vertical board running underwater, from back to front, along the central "spine" beneath the boat. The keel helps to stop a boat rolling (moving from side to side) or capsizing, because it means more force is required to push the boat sideways through the water or rotate it. The keel also plays a part in steering and propelling the boat, as we'll see shortly. here
It is highly important that you remember to drain the water from your boat and then put the plug back in while your boat is on land.
Why Do Boats Spit Out Water? [links]
Even a boat with no hull damage or other sources of damage can take water into the bilge. This can be from rough water, waves, or other water that drains from the vessel.
Modern bilge pumps are often electric and can be controlled by automated switches. [links]
A bilge pump is a water pump that is used to help remove or pump out bilge water. Bilge pumps are set to pump out water when the bilge is full up to a certain level. more
A pontoon boat is a recreational boat. It is designed for fun days in the sun. It is not a utility boat nor is it a deep draft boat designed for turbulent water. [links]
In this article I will address the main reasons a pontoon boat sinks when it is not hit by another vessel.
To avoid problems with the pontoons regular draining of the tubes is needed to maintain a safe boat. Pontoons are fitted with drain plugs that merely require you to unscrew them and let the water pour out before screwing the plug back in. here
Most pontoon boats that sink, sink front first. This is known as a nose dive.
Even if a pontoon boat were so heavy that the pontoons/tubes were very low in the water the boat would still appear to be floating in a stable position. However, when you start the boat and attempt to move off it will quickly become apparent that the pontoon is going to sink.
Loading a pontoon boat to the point where it is over capacity is not a smart thing to do. Overloading is the biggest cause for pontoon boats sinking.