Ship Technology is using cookies

We use them to give you the best experience. If you continue using our website, we'll assume that you are happy to receive all cookies on this website.

ContinueLearn More X

NAMJet Advanced Marine Water Jet Propulsion

The company’s advanced marine propulsion systems provide thrust, durability and speed across a wide variety of commercial, military, and workboat applications.

NAMJet’s line of high-thrust marine jets offer the flexibility of full customisation, while retaining the rugged durability to withstand the most brutal conditions imaginable at speeds of up to 35 knots.

Full-efficient and cost-effective water jet propulsion packages

NAMJet water jets use mass flow designs to pump large volumes of water at relatively low-revolutions per minute (rpm) to provide exceptional thrust while minimising cavitation.

Moving larger volumes of water at lower rpm increases fuel-efficiency and reduces overall horsepower requirements, which allows builders to purchase smaller, more cost-effective engine packages.

Impeller clearance of high-speed jets for abrasive water vessel operation

NAMJet products feature two-to-three times the impeller clearance of competitive high-speed jets, allowing operation in abrasive water without performance deterioration or fouling damage by debris.

NAMJet products enable customers to operate in the harshest conditions.

Multiple lines in the water situations, where a rotating shaft can quickly cause a line to get wrapped around a jet’s shaft, can be dangerous. NAMJet’s optional Tube Protection System eliminates the exposed rotation shaft to maintain vessel operability and ensure crew safety. NAMJet also offers an optional knife system on the aft section of the intake, which severs the line should it become stuck.

Engaging marine jets before entering the water for launch and recovery operations

When launching a workboat from a larger vessel, it is imperative that the smaller craft can escape the larger vessel’s suction and motor away as quickly as possible, especially in environments heavily laden with debris.

To ensure swift launch and recovery operations, NAMJet offers an optional grease-lubricated aft bearing system that enables the jet to run in dry environments. Dry-starts allow operators the opportunity to engage their jets prior to the vessel entering the water.

Flexible jet design and multiple transom configurations

NAMJet’s unique design simplifies installation by welding directly into the hull, making the jet part of the vessel’s structure, and eliminating the need for transition ducts or transom plates.

NAMJet offers the flexibility of multiple transom configurations on-board steel, composite, and aluminium-hulled vessels.

When a manufacturing partner needed a specialized propulsion package for its fast-response workboat, NAMJet engineers custom-designed a "twin-pack" of TJ431HH water jets to create a single, easy-to-install unit that slid easily into the unique hull.

Another shipbuilder came to NAMJet seeking exceptional stability, high forward thrust, and superior reverse thrust, for its newest vessel, a worldwide support platform for oil and gas industry seismographic research.

The company received twin TJ-381HH water jets matched to dual 295hp diesel motors to propel the 31ft, 7,100kg craft to top speeds of 28k, while providing 2,900kg of bollard pull. To date, the company has seen a three-fold increase in reverse thrust since switching to its NAMJet propulsion system.

Low-emission water jets ideal for shallow reefs and aquaculture areas

Environmental responsibility dictates that propulsion systems must be more efficient in order to reduce fuel consumption and emissions, while minimising damage to the fragile marine habitat.

NAMJet has made significant design changes over the years to respond to environmental concerns.

NAMJet water jets provide the highest thrust-per-horsepower at the lowest rpm in the industry. The net result is less fuel burn, lower emissions and diminished impact on the marine environment when operating over shallow reefs and in aquaculture areas.

Marine water jets from the US for worldwide distribution

NAMJet is a global company, with multiple sales channels worldwide; however, every NAMJet water jet starts its journey at the company’s 50,000ft² production facility in Denver, Colorado, US.

Make an enquiry

Follow this company

Follow the company to be always up to date with this company

Press Release

NAMJet Announces RAD-Power as New Partner for Canada

NAMJet have revealed RAD-Power as the exclusive sales agent for the NAMJet product line for Central and Eastern Canada, as well as the Canadian Maritimes.

White Papers

NAMJet’s Superior Performance Benefits

NAMJet's marine propulsion systems provide a wide range of benefits for commercial, military and working boats.


4965 Kingston




United States of America

+1 303 371 9325 +1 303 371 4057

NAMJet Images

Products and Services


Press Release

7 December 2015

NAMJet have revealed RAD-Power as the exclusive sales agent for the NAMJet product line for Central and Eastern Canada, as well as the Canadian Maritimes.

Read more
25 March 2015

Marine jet manufacturer NAMJet has announced its successful bid to provide waterjet propulsion solutions for Science Applications International Corporation's (SAIC) initial upgrade to the US Marine Corps' Assault Amphibious Vehicle (AAV).

Read more
24 February 2015

Colorado-based marine jet drive manufacturer NAMJet has introduced Malgorzata (Gosia) Staniszewska as the company's business development manager for Europe.

Read more

Regional Offices


4965 Kingston




United States of America

+1 303 371 9325 +1 303 371 4057

Contact company

I have read and accept the terms and conditions and privacy policys.
We'd like to keep you informed about relevant promotions, products and services, if you would like not to receive these, check this box.
If you would like to hear from carefully selected third party companies, check this box
Follow this company to receive notifications when they update.

Recommended for you

Simplifying maritime control room operations

Traditionally, maritime control room operators have had to sort through multiple data sources to make sense of everything, sometimes using…
Read More…


Go Top