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BS 50 web

The BOATSPRAY 50 is a small portable diesel powered dispersant pump unit which is designed for operation from small Tugs and Workboats and other specialised vessels using a variety of application equipment including Spray Arms, AFEDO™ Nozzles and Hand Lances.

The system is designed for the application of either concentrated (neat) or diluted dispersant and is available with an extensive range of options as described below.  These options allow the system to be configured to meet specific customer and operational requirements at the most cost effective prices

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Single-cylinder, air cooled direct injection Yanmar diesel engine

Fully customisable to required specification

Compatible with Spray Arms, AFEDO™ Nozzles and Hand Lances

Robust construction in stainless steel with gunmetal and stainless steel pipework

Fully variable outlet flow

Pressure gauge


Reliable and robust pump unit Corrosion resistant

Adjustable application rates

Neat or dilute spraying up to 30% of total outlet flow

Portable, “vessel of opportunity” capability

Available Options

Dilute Spraying Option

Dispersant can be applied in concentrated form ie straight from the drum or diluted in sea water. This option uses an Ayles Fernie designed proportioning eductor to mix dispersant at up to 30% concentration in sea water.

Dilute Flow Rate Indicator (FRI)

If the Dilute Option is selected, an FRI is recommended to indicate the flow of dispersant and to setup the required application rate.

Outlet Flow Rate Indicator (FRI)

In order to set the appropriate flow rate to the application devices ie spray arms, AFEDO™ nozzles or hand lances, it is recommended that an Outlet FRI is fitted to indicate the outlet flow.

Pump Unit Wheel Kit

This removable wheel kit allows the pump unit to be moved about easily by one person and once in position, the wheels can be removed for securing the pump unit on deck if required.

Engine Spark Arrester

The diesel engine can be fitted with a spark arrester to prevent the production of sparks from the engine exhaust.

Pump Unit PVC Cover

We strongly recommend the pump unit cover to protect the unit from weather and deterioration in the highly corrosive marine environment.

Pump Unit Lifting Sling

The pump unit can be supplied with a load tested lifting sling

Aluminium Spray Arms

The BS50 pump unit can be operated with 4m or 6m Spray Arms

Nozzle Downpipes

If Spray Arms are used with the BS50 pump unit, it is likely that Nozzle Downpipes will be required to position the nozzles at the correct height above the water surface.

WingJet Nozzles

The Spray Arm “swath width” can be extended by the use of WingJet Nozzles which are fitted at the outboard nozzle position.

AFEDO™ Nozzles

The AFEDO™ Nozzle is a specially designed nozzle which creates an even drop-out spray pattern and provides an effective alternative to spray arms. See the Application Systems and Equipment page on this website for a full description of the AFEDO™ Nozzle.

Trigger Operated Hand Lances

When dispersing small patches of oil or cleaning structures coated in oil, Hand Lances provide a useful tool for controlled use of dispersant in these circumstances. The Hand Lances are supplied with hoses and fittings for fitting directly to the BS50 Pump Unit.

Oil Dispersant

Ayles Fernie will be pleased to recommend a suitable dispersant.

Recommended Spares

A comprehensive range of spares is available for the pump unit, hand lances, spray arms and the AFEDO™ Nozzle.

Pump Spares

A pump overhaul kit can be supplied which includes all necessary components for repairing a damaged or worn pump.

BS50 Aluminium Storage Container

When the BS50 system is supplied with AFEDO™ Nozzles, they can be conveniently stored in aluminium storage containers. These containers provide secure storage for all system components which protects the system from deterioration, damage and theft. 

Protective Clothing

We recommend that system operators (particularly when using AFEDO™ nozzles) wear the appropriate protective clothing. This option includes; coveralls, goggles, gloves and respirator.

Portable Dispersant Tanks and Manifolds

The storage of dispersant and the supply of the dispersant to the pump unit is crucial for the effective operation of the system. Ayles Fernie can supply these tanks and manifolds for connecting tanks together.

Technical Specification

  • Motive Unit: Diesel Engine with Recoil Start.
  • Pump: Roller Type Positive Displacement Pump with 50 LPM Output.
  • Pipework: Gunmetal Manifolds and Stainless Steel Fittings.
  • Eductor: Proportioning type (0-20%)
  • Frame: Stainless Steel.
  • Valves (Manual):
    1 No. Eductor Shut Off Valve
    1 No. Dispersant Control Valve
    1 No. Recirc Flow Control Valve
  • Pressure Relief Valve: 0 to 10Bar.
  • Pressure Gauge: Dual Scale.

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© Darcy Darcy Spillcare Manufacture 2015 All Rights Reserved all 3rd party trademarks acknowledged.

Darcy Products Limited trading as Darcy Spillcare Manufacture, a company registered in England number 0472058.

The registered office of the company is, Brook House, Larkfield Trading Estate, New Hythe Lane, Larkfield, Kent ME20 6GN.