Description
UBI 24900: 24m Multi-Purpose ASD Tugboat
Professional Vessel Overview
The UBI 24900 is a robust 24-meter multi-purpose ASD (Azimuth Stern Drive) tugboat engineered for maximum versatility and operational efficiency. Designed for shipyard construction and built to professional maritime standards, this vessel combines substantial bollard pull with impressive transit speed (18 knots) to serve a wide spectrum of harbor, coastal, and industrial support roles.
Principal Characteristics & Class Notation
| Parameter | Specification |
|---|---|
| Type | Multi-Purpose ASD Tugboat |
| Classification | Built to shipyard standards; suitable for class notation (e.g., BV, ABS) |
| Length Overall (LOA) | 24.65 m |
| Length Waterline (LWL) | 22.00 m |
| Beam (Moulded) | 6.00 m |
| Depth (Moulded) | 2.50 m |
| Design Draft | 1.80 m |
| Gross Tonnage | Approx. 150 GT (to be confirmed) |
| Hull Material | Marine-Grade Steel (AH36/DH36) |
Propulsion & Performance
Main Propulsion System
| Component | Specification |
|---|---|
| Propulsion Type | Azimuth Stern Drive (ASD)Â – Twin Z-Drive Units |
| Total Installed Power | 900 BHP |
| Engine Configuration | 2 × Cummins NTA855-M450 |
| Engine Output | 450 BHP @ 1800 RPM (each) |
| Transmission | Reinforced marine gearbox to azimuth drives |
| Propellers | 4-Blade, Nozzle-Propelled (Kort Nozzle) for high thrust |
| Bow Thruster | Optional hydraulic tunnel thruster (enhanced maneuverability) |
Performance Data
| Metric | Performance |
|---|---|
| Maximum Speed (Light) | 18+ knots |
| Bollard Pull (Estimated) | 35+ tonnes (Forward), 32+ tonnes (Astern) |
| Bollard Pull (Certified) | To be confirmed by bollard pull test post-construction |
| Fuel Consumption @ 85% MCR | Approx. 120 L/hr (total) |
| Endurance @ 12 knots | Approx. 200+ nautical miles |
| Maneuverability | 360° station-keeping, dynamic positioning capability (optional) |
Fuel, Lube & Capacities
| System | Capacity |
|---|---|
| Fuel Oil (MDO) | 3,000 liters (primary tanks) |
| Fresh Water | 1,000 liters |
| Lube Oil | 200 liters (per engine) |
| Sewage/Holding Tank | 500 liters |
| Ballast Water | Integrated trim tanks (optional) |
Deck Layout & Towing Equipment
Foredeck & Working Area
- Towing Winch:Â Hydraulic double-drum towing winch (capacity: 40+ tonnes)
- Fairleads & Rollers:Â Heavy-duty, forged steel
- Bollards & Bits:Â Cast steel (2 forward, 2 aft)
- Deck Space:Â Clear working area with heavy-duty skid-resistant plating
- Deck Crane:Â Optional knuckle-boom crane (2-5 tonne capacity)
- FiFi System: Optional FiFi1 class firefighting monitor (1800 m³/hr)
Aft Deck & Stern Arrangement
- Stern Roller:Â For towline handling
- Towing Points:Â Strong points integrated into hull structure
- Working Lights:Â LED floodlights for 24/7 operations
- Safety Rail:Â Removable sections for cargo/workpiece handling
Wheelhouse & Navigation
Configuration
- Layout:Â All-around visibility, elevated command position
- Seating:Â Captain + 2 officers
- Accommodation:Â Direct access to crew quarters below
Navigation & Communication Suite
- Radar:Â X & S-band radar systems
- ECS/ECDIS:Â Electronic Chart System with AIS integration
- Conning Displays:Â Multi-function displays for propulsion, power, and CCTV
- Communication:Â VHF, SSB, and GMDSS-compliant radio
- DP System:Â Optional Dynamic Positioning system for station-keeping
Accommodation & Crew Facilities
| Space | Description | Capacity |
|---|---|---|
| Crew Cabins | 2 double cabins + 1 captain’s cabin | 4-5 crew |
| Mess & Galley | Combined lounge with kitchenette | Seats 6 |
| Sanitary Facilities | 2 heads with shower | |
| Climate Control | Full HVAC system throughout | |
| Noise Insulation | Engine room insulated to <75 dB(A) in accommodation |
Multi-Purpose Mission Capabilities
Primary Roles & Configurations
| Role | Key Equipment & Configuration |
|---|---|
| Harbor Tug | Standard towing gear, high maneuverability for ship docking. |
| Coastal Towing | Enhanced winch, extended fuel range, seakeeping hull. |
| Offshore Support | FiFi1, deck crane, enhanced accommodation, DP system. |
| Patrol & Security | Enhanced comms, non-lethal deterrent systems, fast pursuit. |
| Firefighting Vessel | FiFi1 pump (1800 m³/hr), foam system, water cannons. |
| Oil Spill Response | Spill boom deployment reels, skimmer system, dispersant tanks. |
| Cargo/Utility Workboat | Deck crane, clear deck space, modular container fittings. |
Engineering & Systems
Auxiliary Power
- Generators: 2 × 50 kVA diesel generators (24h operation capable)
- Emergency Generator: 1 × 20 kVA (optional)
- Shore Power:Â 380V/50Hz connection
Steering & Control
- Steering System:Â Proportional hydraulic control for azimuth drives
- Control Stations:Â Wheelhouse + aft deck console (optional flybridge)
- Joystick Control:Â Integrated for single-lever maneuvering
Safety & Compliance
- Life-Saving:Â SOLAS-approved life rafts (for full crew), life jackets, EPIRB
- Firefighting:Â Engine room Foam system, portable extinguishers
- Navigation Lights:Â COLREG-compliant
- Stability:Â Intact and damage stability calculations provided
Construction & Delivery
Build Standard
- Hull Construction:Â Welded steel with transverse framing
- Superstructure:Â Aluminum alloy (weight saving)
- Paint System:Â Epoxy coating with anti-fouling below waterline
- Certification:Â Can be built to flag state requirements and class notation
Delivery & Commissioning
- Build Time:Â 8-10 months from contract
- Sea Trials:Â Comprehensive performance and bollard pull tests
- Documentation:Â Full set of as-built drawings, manuals, and certificates
- Training:Â Crew familiarization and operational training included
Specification Summary Table
| Category | Specification |
|---|---|
| Dimensions | 24.65m LOA × 6.00m Beam × 1.80m Draft |
| Propulsion | 2 × Cummins NTA855-M450 (900 BHP Total), ASD Z-Drives |
| Performance | 18 knots speed, 35+ tonne bollard pull |
| Fuel | 3,000 liters MDO |
| Crew | 4-5 persons |
| Deck Equipment | Hydraulic towing winch, FiFi1 (optional), deck crane (optional) |
| Capacities | Coastal/Short offshore operations, multi-role configured |
Optional Packages & Customization
- Offshore Package:Â Enhanced fuel (5,000L), DP system, FiFi1, larger crane.
- Environmental Package:Â Oil spill recovery skimmer, boom reels, dispersant tanks.
- Crew Transfer Package:Â Compliant gangway, fender systems, personnel seating.
- Survey/ROV Support:Â A-frame, winch, dedicated power, dry lab space.
The UBI 24900 ASD Tugboat is a proven, adaptable platform designed for shipyards and operators requiring a vessel that balances power, speed, and multi-role functionality. Its conventional yet robust engineering ensures reliability and ease of maintenance, making it an ideal choice for demanding maritime support operations worldwide.
For detailed class specifications, a definitive bollard pull certificate, and custom configuration pricing, please contact our commercial team.
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