The Basics of Jet Ski Engine Propulsion

The owner and manager of the National Restoration Group in New York City, Mohammad Riaz oversees all project acquisition and management operations for a range of specialized construction projects. When he isn’t working, Mohammad Riaz enjoys riding Jet Skis.

Jet Skis and similar personal watercraft come with either a two-stroke engine (which typically has two or three cylinders) or a four-stroke engine (which typically has four cylinders). Unlike the engines of terrestrial vehicles that require radiators, Jet Ski engines employ surrounding water for temperature control. 

To propel the Jet Ski, the engine turns a piece of equipment called an impeller. Located inside the body of the watercraft near the rear of its submerged bottom, the impeller features curved blades that are similar to those of propeller. While a propeller pushes water outward, the impeller takes water into the Jet Ski at a rapid rate. The water travels through a short internal channel to exit at an adjustable steering nozzle at the back of the watercraft, hitting the relatively stationary water outside with such force that it generates forward thrust. Most modern Jet Skis have reversible impellers that can also move the watercraft in a backward direction.

New Park in Brooklyn Becomes Third Largest in the Borough

Statue of Liberty, NY
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The recipient of a bachelor's degree in construction management from Brooklyn College, Mohammad Riaz is a commercial real estate developer who owns New York's National Restoration Group, Inc. Beyond his professional pursuits, Mohammad Riaz enjoys spending time in nature and hiking.

New York hiking enthusiasts now have another park to explore as the Shirley Chisholm State Park opened on July 2. Located along the shores of Jamaica Bay in Brooklyn, the park boasts 407 acres of green space which makes it the largest state-operated park in the city and third-largest park behind Marine Park and Prospect Park, both of which are managed by the New York City Department of Parks & Recreation.

Prior to its July 2 opening, which was attended by Gov. Andrew Cuomo and other politicians, the park was closed off to the public and served as a dumping site for the contaminated property. It was also a landfill from 1956 until 1983. The overhaul of the area, which will include hiking and biking trails, community gardens, and recreation centers, is made possible through a $20 million investment as part of Cuomo's Vital Brooklyn Initiative, which aims to install enough green spaces or recreation centers so that every Central Brooklyn resident has access to one within a 10-minute walk.

Become a Corrosion Specialist with NACE

A manager at National Restoration Group, Inc., in the Bronx, Mohammad Riaz has experience working in business, construction management, sales, and marketing. To augment this work, Mohammad Riaz belongs to organizations such as the National Association of Corrosion Engineers (NACE).

In Houston, Texas, in 1943, 11 professionals working in the pipeline industry joined together to form NACE, drawing on their extensive experience as corrosion engineers. Since then, NACE has achieved international recognition, becoming a pioneering force in developing solutions to prevent and control corrosion.

The association also offers its members the opportunity to achieve certifications in areas such as cathodic protection, coating inspection, general corrosion, and pipelines through its NACE Institute. Experienced industry professionals can also pursue several specialty certification programs, such as becoming a corrosion specialist.

NACE's top certification program, the corrosion specialist certification requires applicants to have previous certification as a specialist in protective coating, materials selection/design, internal corrosion, cathodic protection, or chemical treatment. Following acceptance of the completed application and contingent upon their work experience, individuals must then pass the exam to receive certification.

For more details on the application process or to learn about other certification opportunities, visit naceinstitute.org.