The KAPLAN type marine propeller is fitted with a non-rotating nozzle. It is used to improve the efficiency of the propeller and is especially used on heavily loaded propellers or propellers with limited diameter. The kort nozzle is a shrouded propeller assembly for marine propulsion. The hydrodynamic design of the shroud, which is shaped like a foil, offers advantages for certain conditions over bare propellers. The KAPLAN propeller is made of copper and approved by CCS, BV, ABS, DNV, GL, LR, etc. It is suitable for container ships, tankers, tug boats, trawlers, fishing boats and yachts, etc. For more information, please be free to contact us.
Ship Proportions
L/B
The ratio of the length and breadth can differ quite dramatically depending on the type of vessel. Common values:
Passenger Ships |
6-8 |
Freighters |
5-7 |
Tug Boats |
3-5 |
A larger L/B value is favorable for speed, but unfavorable for manoeuvrability.
L/D
The length/depth-ratio. The customary values for L/D varies between 10 and 15. This relation plays a role in the determination of the freeboard and the longitudinal strength.
B/T (T=Draught)
The breadth/draught -ratio, varies between 2.3-4.5. A larger breadth in relation to the draught (a larger B/T value) gives a greater initial stability.
B/D
The breadth / depth ratio, varies between 1.3 and 2. If this value becomes larger, it will have an unfavorable effect on the stability (because the deck will be flooded when the vessel has an inclination) and on the strength.
Should you have any preference for the kaplan series marine propeller with tolerance iso484-2, welcome to buy the quality equipment with our factory. As one of the most professional marine equipment manufacturers and suppliers in China, we will offer you good after-sale service and fast delivery.