POOL CLEANING DEVICE

ELECTROMOTIVE DRIVE DEVICE AND A METHOD FOR OPERATING SUCH AN ELECTROMOTIVE DRIVE DEVICE

System and method for optimization of engines on a common variable frequency bus

Motorized Inflatable Pool Lounger

User-operable control for propulsion systems

Coaxial direct drive system having at least two primer movers linearly moveable along a drive support member

Multi-stage watertight chamber

Ship's propulsion unit

Mobile marine barrier

Jet propelled watercraft

Driving Engine (Water Turbine) Of Hydrokinetic Floating Power Plant With Enhanced Efficiency Degree, And Hydrokinetic Floating Power Plant Module

Propeller propulsion system for floating structures