TRANSVERSE THRUSTERMODEL NT-C
Controllable pitch propeller
Propeller Dia. 700mm ~ 3,150mm
Input Power
60kW ~ 3,800kW
Thruster Model

Input Power (kW)TC-70N115

NT-C010285

NT-C020385

NT-C030520

NT-C040670

NT-C050830

NT-C060

1,005

NT-C070

1,250

NT-C080

1,500

NT-C090

1,800

NT-C100

2,150

NT-C1102,500

NT-C120

3,000

NT-C1303,800

14sizes

TRANSVERSE THRUSTERNTMODEL NT-F
Fixed pitch propeller
Propeller Dia. 295mm ~ 3,150mm
Input Power
10kW ~ 3,800kW

19sizesThruster Model

Input Power (kW)TFN-15S27TFN-25S

45

TFN-50S

57

TFN-75S

83

NT-F005140

NT-F007215

NT-F010285

NT-F020365

NT-F030520

NT-F040670

NT-F050830

NT-F060

1,005

NT-F070

1,250

NT-F080

1,500

NT-F090

1,800

NT-F100

2,150

NT-F1102,500

NT-F120

3,000

NT-F130

3,800This table shows the input
power at the case for auxiliaryuse (limited, intermittentdriving). For applications
requiring classiﬁcation,
continuous driving, DP system,or other special speciﬁcations,please contact us for moreinformation.
※1 NT thruster not available in allsizes. Conventional model
available in those cases.
※2 Speciﬁcations are subject tochange without notice.

TRANSVERSE THRUSTER

Nominal Thrust

Excellent performance20%

Approx.

Realizing the full power of a thruster through improved performanceup

NAKASHIMA has investigated the cavitation performance of transverse thrusters by
CFD (Computational Fluid Dynamics). Drawing from our extensive knowledge ofpropeller design and hydrodynamics, we developed superior blade shapes for both
our CPP and ﬁxed pitch thrusters.
As a result of this eﬀort, we have created a compact and powerful thruster withnominal thrust about 20% greater than our previous products.

1Thruster compactness has several beneﬁts. It allows a ship designer to place thethruster further forward, increasing turning moment and therefore shipmaneuverability. Furthermore, its smaller opening reduces hull resistance.

2

OverReliability & Robustness

Contributing to safe navigation with reliable equipment

6000units

NAKASHIMA started manufacturing thrusters in 1976. Since then, we havedelivered over 6,000 units. Utilizing the knowledge gained from our delivery
record, we have developed highly reliable thrusters.
The owner/operator of our new thrusters can be assured that the thruster system,including controls, provides reliable long term service with proper maintenance.
■Both our ﬁxed and controllable pitch thrusters consist of simple and robust
structure. The thruster unit can be removed from hull easily, for on-shore
inspection and maintenance.

3■The thruster propeller shaft seal utilizes the same shaft sealing device as our main
propulsion systems. The sealing ring can be replaced in the aﬂoat condition bybonding. (Fig. 3) (with the exception of our small unit)■Environmentally acceptable lubricants (EAL) requested by the United States
Environmental Protection Agencyʼ s (EPA) Vessel General Permit (VGP) can beused in our thrusters. They use same oil for lubrication and blade pitch control,
allowing for easier oil management.
■For the controllable pitch type, the high performance ﬁlter and air dryer are4

installed in the header tank as standard. The combined use oil for lubrication andblade pitch control maintains oil cleanness. (Fig. 4)■For the controllable pitch type, we use a liquid crystal touch panel for the remotecontrol device, which helps to eﬃciently manage large amounts of information.
The operator can assess the whole thruster system condition from the console inthe bridge, contributing to safe navigation. (Fig. 5)■We have service agencies in Asia, the Middle East, Europe, Africa, North America,and South America. Our worldwide service network can provide all necessary
maintenance work.

Optimal solution

5“Optimal” solution for every request

At NAKASHIMA, we take the time to evaluate each individual application. For
research ships, minimizing noise and vibration is extremely important and reducing
propeller cavitation in the thruster is critical.
For this case, we utilized our hydrodynamics technology and experts to develop a
special blade proﬁle designed to reduce underwater noise. (Fig. 6)

6