The Kamewa® very large waterjet series has been
developed for powers in excess of 24MW. Manufactured
from stainless steel, the mechanical layout is divided
into a series of elements. The inlet duct is integrated
into the hull structure. The impeller chamber is bolted
to the transom and inlet duct. Outboard of this is the
guide vane chamber and steering and reversing unit.
Kamewa very large waterjet
Features and benefits
- Novel weight saving thrust bearing incorporates
PTFE thrust pads and dynamic positioning of the impeller
to compensate for wear or changes in water temperature
- Each unit designed and customised to meet the vessels
operating profile
- World's largest waterjet range
- Stainless steel construction for maximum wear and
corrosion resistance
- 90 per cent + efficiency due to mixed flow pump
design
The impeller shaft is supported by a downstream bearing,
has the seal box at its inboard end on the intake duct,
and is supported within the hull by a split bearing.
The massive thrust is absorbed by a thrust block positioned
in the hull, which uses PTFE face thrust pads to reduce
weight.
A unique positioning system ensures optimum tip clearance
between the impeller and its chamber and can be used
to compensate for wear.
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