UltraJet 251

UltraJet 251

UltraJet 251

Product catalog summary
Overview: The MJP Ultrajet 251 is designed for high-performance marine applications requiring high bollard pull and exceptional acceleration without sacrificing speed. It is suitable for commercial, pleasure, and military craft.
Key Features:
  • Excellent resistance to cavitation, providing high thrust at low speeds.
  • Lightweight and compact design with various control systems mounted on the jet.
  • Superior maneuverability, allowing for quick acceleration, reversing, stopping, rotating, station holding, and sideways movement for easy docking.
  • Higher mid-range thrust for improved cruising speed and economy.
  • Lower vibration and noise levels compared to other propulsion methods.
  • Wide range of mechanical and electrical reversing controls developed by MJP.
  • Standard rubber impeller shaft bearing with an optional composite bearing for dry running.
Specifications:
  • Impeller diameter: 250mm (9.84 inches).
  • Compatible with engines up to 261 kW.
  • Available with hydro-mechanical and electro-hydraulic steering and reverse control systems.
Planing Craft Capacity:
  • Maximum input power: 261 kW (350 bhp).
  • Single jet: up to 4 tonnes (8,816 lb).
  • Twin jets: up to 9 tonnes (19,836 lb).
  • Triple jets: up to 15 tonnes (33,060 lb).
Displacement Craft Capacity:
  • Maximum input power: 112 kW (150 bhp).
  • Single jet: up to 8 tonnes (17,632 lb).
  • Twin jets: up to 18 tonnes (39,672 lb).
  • Triple jets: up to 28 tonnes (61,712 lb).
  • Note: Displacement figures can often be exceeded with good hull shapes.
Additional Information:
  • Impellers are available to match most diesel and gasoline engine and transmission combinations for optimal thrust performance.
  • Drive flange options include DIN, SAE, or others.
  • Unit weight: 153 kg (338 lb) dry, 186 kg (411 lb) including entrained water.
  • Consult Marine Jet Power Technical Department for vessel and performance analysis.
  • Lloyds ISO9001 approved.
Contact Information:
  • Marine Jet Power Inc., USA: +1 (614) 759 90 00
  • Marine Jet Power AB, Sweden: +46 (0)10 165 10 00
  • Marine Jet Power Korea Co. Ltd, Korea
See more

Catalog excerpts

UltraJet 251-1

PRODUCT DATA SHEET The MJP Ultrajet range excels where high bollard pull and exceptional acceleration is a specified craft requirement and boat speed must not be sacrificed to achieve this. Features & Benefits • Excellent resistance to cavitation in displacement craft - high thrust at low speed • Light weight and compact design with a variety of on jet mounted control systems • Superior manoeuvrability. Ability to accelerate quickly, reverse, stop, rotate, hold station and move sideways for ease of docking. • Higher mid-range thrust for improved cruising speed and economy Description MJP Ultrajet 251 with a 250mm (9.84”) diameter impeller provides higher thrust per horsepower and can be used with engines up to 261 kW. The MJP Ultrajet 251 incorporates an efficient and robust axial flow pump unit utilising four or five bladed impellers to match the specific engine power at a range of input speeds. MJP Ultrajet drives have been developed for commercial, pleasure and military craft. The MJP Ultrajet 251 can be supplied with a full range of both hydro-mechanical and electro-hydraulic steering and reverse control systems. • Lower vibration and noise levels than other propulsion methods • Wide range of MJP-developed mechanical and electrical reversing controls • Standard rubber impeller shaft bearing or optional composite bearing if dry running is required Planing Craft Maximum input power 261 kW (350 bhp) Single jet up to 4 tonnes (8,816 lb.) Twin jets up to 9 tonnes (19,836 lb.) Triple jets up to 15 tonnes (33,060 lb.) Displacement Craft Maximum input power 112 kW (150 bhp) Single jet up to 8 tonnes (17,632 lb.) Twin jets up to 18 tonnes (39,672 lb.) Triple jets up to 28 tonnes (61,712 lb.) Note: The displacement figures can often be exceeded on good hull shapes.

 Open the catalog to page 1
UltraJet 251-2

STEERING LEVER FORWARD INSPECTION COVER REVERSE OUTBOARD VIEW OF MJP ULTRAJET UNIT REVERSE FORWARD INBOARD VIEW OF MJP ULTRAJET UNIT Typical Specifications: 1. mpellers are available to match most diesel and gasoline I engine and transmission combinations for optimum thrust performance. 3. Unit weight 153 kg (338 lb.) dry (Includes hydraulic system and controls) or 186 kg (411 lb.) including entrained water. 4. Consult Marine Jet Power Technical Department for vessel Marine Jet Power AB Hansellisgatan 6 SE 754 50 Uppsala Sweden Tel: +46 (0)10 165 10 00 We have a policy of continuous improvement...

 Open the catalog to page 2

All Marine Jet Power (MJP) catalogs and brochures

  1. Mjp DRB

    2  Pages

  2. MJP Controls

    9  Pages

*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.