![]() Restriction: Every engine works against a certain amount of back pressure from the exhaust.While the specifications of your engine and exhaust system may vary, there are certain requirements that every system should follow: What are the Main Constraints of Inboard Exhausts? They do run cooler but also require a lift muffler and protection against damage from leaks. Below Water: Below water installations are quieter, but you don't have the same ability to look over the transom to see exactly what's happening.Above Water: As the name suggests, in this case the entire exhaust system operates above the waterline it's easy to see what's going on but it can be noisy and they often run hotter than below water installations.There are two basic approaches to follow to achieve these goals: Most boats feature a wet exhaust system, where water injects into the exhaust to moderate the temperature and noise levels. What are the Basic Types of Exhaust Systems?Īll marine exhausts do two things, by their very design: remove exhaust gasses and keep water out. A simple boat exhaust blower can help clear away potential leaks, but you need something that can both get the exhaust out of the boat and make sure the water doesn't flow back into the engine. Every inboard engine needs a way to get the exhaust out of the engine compartment. ![]() Marine outboard exhaust systems get the exhaust out of the boat so you don't have to breathe it. We invite you to contact us to begin the process of building your very own Metal Shark powered by Swamp Shark.In the world of marine performance, you cannot underestimate the importance of inboard exhaust systems. With a multi-year backlog of fleet contracts worth multiple millions of dollars, customers can count on Metal Shark to be there with unmatched warranty service and technical support. Metal Shark possesses not only the knowledge to design and build boats capable of withstanding years of use and abuse, but the company has the strength and the financial backbone to weather the economy. Metal Shark builds each boat to military-spec standards, and from wiring to welds, the superlative quality of a Metal Shark vessel is evident throughout. From its three shipbuilding facilities in Alabama and Louisiana USA, Metal Shark employs over 500 American workers who produce aluminum and steel vessels up to 300’ in length for military, law enforcement, fire rescue, and commercial operators worldwide. Armed Forces, Metal Shark designs, builds, and delivers nearly 200 boats per year. A leading defense contractor and supplier of boats for the U.S. For propulsion system inquiries contact Shark is no fly-by-night operation. The Swamp Shark propulsion system, patents, and trademarks are the property of Swamp Shark Drives, LLC. Metal Shark is the exclusive supplier of Swamp Shark technology for military applications. Click here to download 21 Swamp Shark Spec Sheet Are you ready to move up to a true high performance shallow water machine? Contact us today to begin the process of building your own Metal Shark powered by Swamp Shark, coming soon to a swamp near you. The 21 Swamp Shark is available with gas or diesel power and a wide range of custom equipment including LED flood lights, bow hunting lights, rod lockers, coolers, and more. With nearly 200 boats delivered each year to demanding customers like the US Army, Navy, Air Force, Coast Guard and foreign militaries worldwide, Metal Shark possesses unsurpassed expertise in the design and construction of durable, military-grade, welded aluminum boats. Viewed and shared by millions of people the very week of its debut and many more since, this rugged machine is like nothing else on (or near) the water. Here’s the mud-slinging, tree-eating shallow water high performance boat that even your mom knows about.
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