Kumera is a well-know manufacturer of fire pump gearboxes for offshore installations. The pump itself is typically positioned 30-50 meters down from the platform deck, below the sea surface.
Traditionally the Kumera bevel gearboxes are used for this application. They are designed with a hollow output shaft in order to connect the water pump drive shaft effectively to the gearbox.
Please see more details on offshore fire pump gearboxes here.