The hulls of jet skis have flotation foam built into them expressly so that the bow will stay afloat if they take on water. As a result, although they may partially sink, personal watercraft won't entirely submerge.
The damage that could originate from a jet ski getting submerged in water may be substantial and might result in very expensive repairs, particularly if the engine is flooded. But you should know that gallons of water pouring into the hull can cause severe damage, even if your jet ski doesn’t entirely sink!
You shouldn't worry, though, as jet skis seldom capsize. And when they do, it's frequently due to the owner's negligence, ignorance, bad maintenance, or even an accident.
In the end, being cautious and paying attention to what you're doing will help you avoid these scenarios.
Drain plugs are a feature of jet skis that help to drain extra water once the vehicle has been taken out of the water. Before the jet ski is put back on the water, these drain plugs must be changed, since failing to do so could allow the jet ski to absorb far more water than usual and tip over.
The engine might then flood, and other metal components could rust very quickly, especially if there is saltwater around. Additionally, there can be additional mechanical issues, which would lead to mold and a poor performance from the jet ski.
The majority of the time, missing drain plugs are the reason why a jet ski sinks. When a jet ski is taken out of the water, water can be drained from the bilge using the drain plugs that are provided.
Sadly, before launching their jet ski once more, owners occasionally forget to replace the plugs. This enables water to enter the hull as soon as the jet ski is submerged again.
Also, riders, because they neglect to complete the pre-ride checklist and possibly because they haven't even read their owner's manual, frequently commit this error and overlook this step.
The drain plugs may or may not need to be removed, depending on the model you own. As long as your hood seals are still in place, very little water likely entered the bilge even if you were out in pretty rough seas. For this reason, a lot of rentals never remove their drain plugs. They merely suck out any water left in the bilge from the vehicle using a shop vacuum.
Simply reinstall the plugs once you've finished your after-ride maintenance procedure and the bilge is completely dry. Additionally, be sure to understand the differences between drain plugs and flush ports because they have entirely distinct functions. The lowest part of your jet ski has black drain plugs, whereas the highest part has gray flush ports.