Whitewater Marine Corp.

WMC 306 Water JetThe WMC 306 water jet propulsion system has been designed for pleasure and commercial use to give outstanding performance in boats in the 24ft. (7.3m) to 32ft. (9.7m) 2 to 4 tonne range. Using a single WMC-306 jet and engine up to 420 hp or a twin application giving superb performance on high speed vessels in the 32ft. (9.7m) to 38ft. (11.5m) up to 8 tonne range.

 

CONSTRUCTION - The WMC 306 water jet housing is manufactured from a highly robust Glass Reinforced Plastic composite. Its casting is made from High Tensile ASA 957 and shaft machined from stainless steel 316. Making this water jet strong, tough and light weight unit.

DESIGN - This mixed axial flow water jet delivers both  efficiency and performance from 0 to 50 knots. The water jet incorporates an innovative and a state of the art impeller design, this matched with nozzle and bucket configuration produce the ultimate in speed and maneuverability.

NATO STOCK NUMBER: 2010-21-914-7401

MANUFACTURING PROCESS:
ISO 9001 COMPLIANT

SPECIFICATIONS

ENGINE SIZE
Diesel Up to 420 h.p.
Max. Impeller speed 3600 r.p.m.

IMPELLER DIAMETER AT INLET
12" (306mm)

NOZZLE DIAMETER
Standard 7.5" (191mm)
(Other options on request)

BEARING
Front: taper roller thrust bearings,  oil bath lubricated.
Rear: water lubricated composite material.  (other options available)

SEALS
Mechanical type seal for the seawater.
Lip seals for bearing housing.

MATERIALS
Parts moulded in G.R.P.
Main Housing Reverse Bucket
Stator housing Steering Nozzle
Fairing Inspection Cover

CASTINGS ASA 957 High Tensile
Bearing Housing Impeller
Bearing Housing Cap Rock Guard
Bearing Housing End Cap

316 SS COMPONENTS
Shaft Wear ring
Control linkages All Fasteners

CONTROLS
Manual hydraulic steering cylinder fitted as well as reverse bucket cylinder with either electronic manual follow-up available as an optional extra.

WEIGHT
275 lbs (125kg) Entrained water 138 lbs (63kg)

OPTIONS
Available for Std & Mid Transom models

  • Single action raised inspection cover
  • Sealed aft bearing assembly(for highly silted operation)
  • Joystick (2 axis) control system (for one handed station keeping)
  • Manual or Fly by wire hydraulic electric control systems.
  • High volume pressure discharge 2800 L/min (750 GPM)
  • 51mm (2 in.) suction-salvage system.

POWER & PERFORMANCE

'SINGLE' JET SELECTION

Having established a power plant, and boat operating speed the graph shows appropriate choice of jet size. The curves show the band of most efficient operation for each of the WMC jet models. These figures apply to SINGLE installations.

'SINGLE' JET PERFORMANCE

The chart indicates the performance to be expected using a WMC jet. The factor for performance is POWER to WEIGHT RATIO, although it is also affected by boat size, dead rise angle, L.C.G., surface finish and particularly for boats at low planing speeds, by planing surface in relation to weight. While this is not a guarantee, 90% of boats 22' to 45' range fitted with WMC jets give speeds lying between the lines shown.

WMC 306 and 357 Thrust Curves

 

Drawings

WMC306 Standard Transom

 WMC306 Mid Transom Drawings


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WMC Water Jet Test Boat Videos

306 and 357 Water Jet - Test Boat Demos
Sample Power Jet Applications :: Sample Power Jet Application

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View our complete Whitewater Marine Corp. You Tube channel.

Whitewater Marine Corp. Logo 

Water Jet Propulsion System Features

Built-in Composites for Light Weight Strength and Smooth Hydro-Dynamic Forms.

Manufacturing Standard
ISO 9001 - 4 COMPLIANT

Major Components’ built in rugged composites

Impellor

Housing

Pump

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