Beta 50 Greenline
48.9 hp @ 2,800 rpm

Technical Specifications

Power: 48.9 hp @ 2,800 rpm
Aspiration: Natural
Cylinders: 4
Displacement: 2197 cc
Weight: 260 kg
Propeller: 19″ x 12″

A general guidance for propeller size in inches, based upon 3 blade RH rotation and reduction ratio of 2:1. *For accurate individual advice please provide us with your vessels current full specifications.

Installation Recommendation

.

Standard Specifications

  • RCD 2 (Recreational Craft Directive 2013/53/EU) exhaust emission compliant.
  • EPA (U.S Environmental Protection Agency) Tier III – 40 CFR 1042 exhaust emission compliant.
  • Mechanically governed comes with:
    • Keel cooled header tank and water cooled exhaust manifold.
    • Fresh water pump, male dry exhaust outlet & loose fuel/water separator.
    • Mechanical fuel lift pump, fuel and oil filtration.
    • Flywheel housing and drive plate with heavy inertia ring for super smooth running at low rpm.
    • Special quiet air intake filter.
  • 45 Amp, 12 Volt battery charging alternator.
  • 175 Amp, 12 Volt domestic battery bank alternator.
  • Complete with ‘C Deluxe’ control panel with tachometer with running hour recorder, keystart switch, push button stop, green light for ‘power on’, red warning lights and audible alarm for: low oil pressure, high water temperature, domestic and engine alternator ‘no charge; 3m interconnection cable with multi-pin plug connector.
  • Heavy duty engine feet and flexible mountings.
  • ‘Morse’ type end fittings for engine speed and gearbox control.
  • Engine test certificate and operators manual.
  • Beta green paint.

*Valid for Recreational
Use Only!

Gearbox Options & Technical Drawings

Beta Marine offer the following standard gearbox options and reduction ratios. Gearboxes have been selected to match the torque loading of each engine and will be correct for the majority of Narrowboats, Wide Beams or Dutch Barges. Find out more…

Bobtail – No Gearbox

Bobtail Engine with Drive Plate, Housing & Oil Cooler for Hydraulic Gearbox

Optional
Hydraulic Drive

Full Hydraulic Drive in Lieu of Gearbox

Optional
Technodrive / Twin Disc

TM345 – Hydraulic

Optional
PRM Marine

PRM150 – Hydraulic

Standard

PRM280 – Hydraulic

Optional

Control Panel Options

Beta Marine offer a range of control panels to cater for various requirements. Click on any of the thumbnail images to view a larger more detailed image of the control panel. Find out more…

ABV Panel
Optional

AB Panel
Optional

C Deluxe Panel
Standard

Flybridge Control
Optional

Electrical Options

We offer a selection of different alternator options (subject to additional cost) to suit most requirements for heat exchanger engine use. However, if you require an alternative solution with specific alternators we can usually design, manufacture and fit suitable alternator supports and pulley drives to suit your needs. Find out more…

Note: Minimum recommended battery: Not included.

12v 94Ah 620CCA

12 Volt Alternators
45 Amp, 12 Volt Alternator Standard
175 Amp, 12 Volt Secondary Domestic Alternator Standard
Lithium Ion Battery Charger Alternator 130 Amp, 12 Volt in Lieu of Secondary Alternator Optional
24 Volt Alternators
80 Amp, 24 Volt Secondary Domestic Alternator in Lieu of Standard (Polyvee Drive) Optional
100 Amp, 24 Volt Secondary Domestic Alternator in Lieu of Standard – Port Side Mounted (Polyvee Drive) Optional
Travel Power
3.5 kVA Travel Power – 230 Volt, Single Phase 50Hz Optional
5.0 kVA Travel Power – 230 Volt, Single Phase 50Hz Optional

Special Feet Service

Beta Marine engines have been fitted into tens of thousands of vessels around the world using our standard engine feet. However engine bearers can vary immensely so when a problem arises, our solution is to offer our unique service of designing and manufacturing “Special Engine Feet” to suit your individual engine bearers.

Having designed, manufactured and supplied thousands of bespoke “Special Feet” when required, the additional cost of this option is heavily repaid when your new engine just drops onto your existing engine bearers and lines up with your propeller shaft reducing installation complexity, time and labour. Find out more…

Super Silent Options

Although our engines are “quiet” by comparison with other diesels, for customers who demand especially quiet cruising Beta Marine have developed a highly insulated acoustic enclosure option for an appropriate range of keel cooled engines. Find out more…

PRM Marine

PRM150 – Hydraulic

Standard

PRM280 – Hydraulic

Optional

Hybrid Propulsion

The Beta Marine, Hybrid-Marine partnership has delivered a state of the art, robust and reliable hybrid solution for Narrowboats, Wide Beams & Dutch Barges. Hybrid systems are based on our renowned Greenline range of engines and available for the Beta 43 through to the Beta 115. Find out more…

Standard Specification

  • 10kW Single engine mounted electric motor/generator, control box and control panel.
  • 12v 45 Amp Engine starter battery alternator.
  • Twin 24v 60 Amp Engine domestic battery alternators.
  • 48v @ 400Ah Battery bank – 4 < 6 10kW Narrowboat electric propulsion hours.
  • Battery auto watering and venting system.
  • Battery monitor.
  • 3kW (6kW Peak) charger/inverter.
  • Cross charger for single 12v buffer battery – may be bow mounted to provide bow thruster power if required.

Gas Free Boat Specification

  • 48v @ 800Ah Battery bank upgrade – 8 < 12 10kW Narrowboat electric propulsion hours.
  • 5kW (10kW Peak) charger/inverter.

Accessories

Beta Marine inland waterway propulsion engines are complemented by a complete range of installation accessories. Find out more…

Literature & Manuals

Beta 43 – Beta 60
Illustrated Parts List

TM345 & TM345A Gearbox
Operators Maintenance Manual

PRM150 Gearbox
Operators Maintenance Manual

PRM280 Gearbox
Operators Maintenance Manual

PRM500 Gearbox
Operators Maintenance Manual

Dealer Locator

Beta Marine approved mobile installation / service engineers and spare part stockists maybe found by clicking or tapping on the canal filter box and selecting your canal network within the interactive map below. If your location has no convenient nearby mobile installation / service engineer please contact the Beta Marine Help Desk.

Filter by

= Spares Stockists

= Marine Engineer

= Spares & Engineer

Online Enquiry Form

(If Applicable)

When using the contact form or an email address within this website you will be providing Beta Marine Ltd some very limited personal information. This information is used only in the scope of performance of contract or fulfilment of the requested service such as processing your enquiry or providing bespoke technical support.

After completion of the performance of contract or fulfilment of the requested service the personal data you have provided is first securely stored for future reference and or further support. After a period of 24 months the data you have provided is securely deleted.

All forms and emails are delivered by a Hypertext Transfer Protocol Secure HTTPS method.

reCAPTCHA is required.
Standard Specifications

Installation Recommendation

.

Standard Specifications

  • RCD 2 (Recreational Craft Directive 2013/53/EU) exhaust emission compliant.
  • EPA (U.S Environmental Protection Agency) Tier III – 40 CFR 1042 exhaust emission compliant.
  • Mechanically governed comes with:
    • Keel cooled header tank and water cooled exhaust manifold.
    • Fresh water pump, male dry exhaust outlet & loose fuel/water separator.
    • Mechanical fuel lift pump, fuel and oil filtration.
    • Flywheel housing and drive plate with heavy inertia ring for super smooth running at low rpm.
    • Special quiet air intake filter.
  • 45 Amp, 12 Volt battery charging alternator.
  • 175 Amp, 12 Volt domestic battery bank alternator.
  • Complete with ‘C Deluxe’ control panel with tachometer with running hour recorder, keystart switch, push button stop, green light for ‘power on’, red warning lights and audible alarm for: low oil pressure, high water temperature, domestic and engine alternator ‘no charge; 3m interconnection cable with multi-pin plug connector.
  • Heavy duty engine feet and flexible mountings.
  • ‘Morse’ type end fittings for engine speed and gearbox control.
  • Engine test certificate and operators manual.
  • Beta green paint.

*Valid for Recreational
Use Only!

Gearbox Options/Technical Drawings

Gearbox Options & Technical Drawings

Beta Marine offer the following standard gearbox options and reduction ratios. Gearboxes have been selected to match the torque loading of each engine and will be correct for the majority of Narrowboats, Wide Beams or Dutch Barges. Find out more…

Bobtail – No Gearbox

Bobtail Engine with Drive Plate, Housing & Oil Cooler for Hydraulic Gearbox

Optional
Hydraulic Drive

Full Hydraulic Drive in Lieu of Gearbox

Optional
Technodrive / Twin Disc

TM345 – Hydraulic

Optional
PRM Marine

PRM150 – Hydraulic

Standard

PRM280 – Hydraulic

Optional
Control Panel Options

Control Panel Options

Beta Marine offer a range of control panels to cater for various requirements. Click on any of the thumbnail images to view a larger more detailed image of the control panel. Find out more…

ABV Panel
Optional

AB Panel
Optional

C Deluxe Panel
Standard

Flybridge Control
Optional

Electrical Options

Electrical Options

We offer a selection of different alternator options (subject to additional cost) to suit most requirements for heat exchanger engine use. However, if you require an alternative solution with specific alternators we can usually design, manufacture and fit suitable alternator supports and pulley drives to suit your needs. Find out more…

Note: Minimum recommended battery: Not included.

12v 94Ah 620CCA

12 Volt Alternators
45 Amp, 12 Volt Alternator Standard
175 Amp, 12 Volt Secondary Domestic Alternator Standard
Lithium Ion Battery Charger Alternator 130 Amp, 12 Volt in Lieu of Secondary Alternator Optional
24 Volt Alternators
80 Amp, 24 Volt Secondary Domestic Alternator in Lieu of Standard (Polyvee Drive) Optional
100 Amp, 24 Volt Secondary Domestic Alternator in Lieu of Standard – Port Side Mounted (Polyvee Drive) Optional
Travel Power
3.5 kVA Travel Power – 230 Volt, Single Phase 50Hz Optional
5.0 kVA Travel Power – 230 Volt, Single Phase 50Hz Optional
Special Feet Service

Special Feet Service

Beta Marine engines have been fitted into tens of thousands of vessels around the world using our standard engine feet. However engine bearers can vary immensely so when a problem arises, our solution is to offer our unique service of designing and manufacturing “Special Engine Feet” to suit your individual engine bearers.

Having designed, manufactured and supplied thousands of bespoke “Special Feet” when required, the additional cost of this option is heavily repaid when your new engine just drops onto your existing engine bearers and lines up with your propeller shaft reducing installation complexity, time and labour. Find out more…

Super Silent Options

Super Silent Options

Although our engines are “quiet” by comparison with other diesels, for customers who demand especially quiet cruising Beta Marine have developed a highly insulated acoustic enclosure option for an appropriate range of keel cooled engines. Find out more…

PRM Marine

PRM150 – Hydraulic

Standard

PRM280 – Hydraulic

Optional
Hybrid Propulsion

Hybrid Propulsion

The Beta Marine, Hybrid-Marine partnership has delivered a state of the art, robust and reliable hybrid solution for Narrowboats, Wide Beams & Dutch Barges. Hybrid systems are based on our renowned Greenline range of engines and available for the Beta 43 through to the Beta 115. Find out more…

Standard Specification

  • 10kW Single engine mounted electric motor/generator, control box and control panel.
  • 12v 45 Amp Engine starter battery alternator.
  • Twin 24v 60 Amp Engine domestic battery alternators.
  • 48v @ 400Ah Battery bank – 4 < 6 10kW Narrowboat electric propulsion hours.
  • Battery auto watering and venting system.
  • Battery monitor.
  • 3kW (6kW Peak) charger/inverter.
  • Cross charger for single 12v buffer battery – may be bow mounted to provide bow thruster power if required.

Gas Free Boat Specification

  • 48v @ 800Ah Battery bank upgrade – 8 < 12 10kW Narrowboat electric propulsion hours.
  • 5kW (10kW Peak) charger/inverter.
Accessories

Accessories

Beta Marine inland waterway propulsion engines are complemented by a complete range of installation accessories. Find out more…

Literature and Manuals

Literature & Manuals

Beta 43 – Beta 60
Illustrated Parts List

TM345 & TM345A Gearbox
Operators Maintenance Manual

PRM150 Gearbox
Operators Maintenance Manual

PRM280 Gearbox
Operators Maintenance Manual

PRM500 Gearbox
Operators Maintenance Manual

Dealer Locator

Dealer Locator

Beta Marine approved mobile installation / service engineers and spare part stockists maybe found by clicking or tapping on the canal filter box and selecting your canal network within the interactive map below. If your location has no convenient nearby mobile installation / service engineer please contact the Beta Marine Help Desk.

Filter by

= Spares Stockists

= Marine Engineer

= Spares & Engineer

Online Enquiry Form

Online Enquiry Form

(If Applicable)

When using the contact form or an email address within this website you will be providing Beta Marine Ltd some very limited personal information. This information is used only in the scope of performance of contract or fulfilment of the requested service such as processing your enquiry or providing bespoke technical support.

After completion of the performance of contract or fulfilment of the requested service the personal data you have provided is first securely stored for future reference and or further support. After a period of 24 months the data you have provided is securely deleted.

All forms and emails are delivered by a Hypertext Transfer Protocol Secure HTTPS method.

reCAPTCHA is required.