Model PSWS-SR
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Model PSWS-SR

Configuration

  • Single wheel-drive units on slipway slope
  • Stern ramp with single wheel-drive units
Features

Features

SWL: Up to 12 tons
Wheel-drive system: Hydraulic
Single wheel-drive units: Manually adjustable to different hull shapes
Slipway operation: Semi-automatic with single-operator
Slipway slope length: According to customers' request
Slipway angle: Up to 12 ° slope angle
Slipway access/entrance: Via submerged wheel-drive units on stern ramp
Boat guiding system: Wheel-drive units and guide poles on ramp
Stern ramp dimensions: Designed to purpose and vessel interface
Ramp movement: Hydraulic operated cylinders

Options

Options

  • Remote control from daughter craft
  • Various remote control options on vessel side
  • Power and control system redundancy
  • Emergency launch and recovery by accumulator and UPS
  • Parking position for additional boat(s)
  • Higher slope angle and/or SWL (if possible/feasible)

Detailed Product Information

Find out more about our Slipway and Stern Entry Systems with single wheel-drive units.

Slipway and Stern Entry Systems with Single Wheel-Drive Units

PALFINGER’s hydraulically powered, semi-automatic Slipway System consists of several single wheel-drive units in parallel rows. The tilt, height, and distance between the wheels can be manually adjusted to conform to a range of daughter craft hulls.

A daughter craft can engage the slipways at a range of speeds up to seven knots higher than the speed of the mother vessel. When a boat enters the slipway, the overrunning clutches allow free rotation of the wheels in the recovery direction until the boat speed and wheel-drive speeds match.

At that point, the hydraulically powered wheel-drive units will take over under single-operator control and dock the daughter craft safely inside the slipway. End stoppers automatically set the craft in parking and stowage positions and engage the fail-safe brakes on the wheel-drives.

Max. Sea State for Slipway Operations

Test and operational use of this Slipway System have been performed in Sea States 3 with mother vessel steaming ahead with low speed.

Safe operations at higher Sea States may be possible but is highly dependent on:

  • Stern entry arrangement
  • Mother vessel heading and speed
  • Mother vessel responsiveness (RAO Profile)
  • Waves and wind pattern
  • Boat driver’s skills

Technical Data

Wheel-drive unit configuration:1 wheel on each wheel-drive unit
Wheel angle and transverse spacing:Manually adjustable
Brakes:1 for each wheel
Hydraulic motors:1 for each wheel
Over-running clutches:1 for each wheel
Number of single wheel-drive units:Depending on length of slipway
Wheel diameter:Ø 434 mm (Foam filled)
Max. freewheel speed, inlet:0-240 m/min (0-7 knots)
Drive assist speed, in and out:0-25 m/min (0-0.8 knots)
Max. slipway slope angle:Up to 12°
Max. payload for slipway:Up to 12 tons
Max. load, each wheel:2 tons
Weight (each wheel-drive unit):Approximately 420 kg
Slipway System PSWS-SR Model
Slipway System PSWS-SR Model
Slipway System PSWS-SR Model
Slipway System PSWS-SR Model

Download Area

Brochure: Slipway and Stern Entry Systems

English 2025

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