Ship propellers are a constant compromise between efficiency, vibration, cavitation, and power delivery. This video explains why adding blades can solve serious mechanical problems, and why engineers ...

The propellers of the world's ships and boats create a constant drone that disrupts ocean life. New propeller designs based on loops could one day quiet that drone and be more fuel efficient. Sharrow ...

Naval Group manufactured a new-generation propeller via a metal 3D printing process, mounted on a tripartite minehunter.This propeller is 2.5-m in diameter, supported by five 200-kg blades. The ...

Subscribe to our newsletter for the latest sci-tech news updates. SINTEF has now designed and manufactured new measuring equipment for model testing of contra-rotating propellers. This could be good ...

They can weigh up to 150 tons, and it's not uncommon for them to measure nine meters or more in diameter: the ship propellers on huge tankers, container ships and cruise liners are invisible giants.

DynaFlow's underwater jet cleaning diver tool is designed to reduce propeller fouling removal maintenance time and without being abrasive to the propeller blades. The company second generation ...

Considered to be the last great French merchant Ship, the Belem is an impressive three-mast Vessel reaching 34 metres (112 ft) tall and 58 metres (90 ft) long. As well as possessing an impressive 22 ...

SAN DIEGO (KGTV) -- A cruise ship in need of repair will be in San Diego for an additional day after passengers say it received some sort of damage to its propeller. Passengers say the ship's ...

San DiegoSan Diego — Passengers aboard the Holland America Line cruise ship Oosterdam unexpectedly had an extra day to spend in San Diego this weekend when propeller issues delayed the ship’s ...