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Aquafarer Defender 540 (DF540) Heavy-Duty Offshore Workhorse
Mid-size Workhorse, the flagship model in the Defender Commercial/Special Operations Series, designed for all-around utility operations and offshore patrol.
RIB Boats DF500
Aquafarer Defender 500 (DF500) Commercial / Heavy-Duty Workhorse
Core commercial utility RIB stepping into the 5-meter class within the Defender series, upgraded with a 24° deep V deadrise and an integrated bilge fuel tank.
rib defender inshore mid-range commercial patrol sar
Overall Length 5.00 m – 5.10 m / 16' 5' – 16' 9'
Internal Length 4.14 m – 4.16 m / 13' 7' – 13' 8'
Beam 2.23 m – 2.28 m / 7' 4' – 7' 6'
Internal Beam 1.20 m / 3' 11'
Deadrise 24° (offshore-grade commercial deep V hull) / 24°
Tube Diameter 52 cm / 20' / 20.5'
Full Specifications ▼
Air Chambers 6
Fuel Tank 90 L / 23.7 Gal
Max Load 800 kg – 1,051 kg / 1,764 lb – 2,317 lb
Max Persons 10
Boat Weight 436 kg – 441 kg / 961 lb – 972 lb
Max Engine Weight 170 kg / 375 lb
Max Power 100 HP
Recommended Power 80 HP
Engine Shaft L (Long Shaft / 20')
Design Category Category C (Inshore / Coastal Special Duty Operations) / Category C
TLDR
A 5.00m commercial RIB with 4mm aluminum 24° offshore deep V hull, 90L integrated fuel tank, rated for 100 HP.
- Coast guard, patrol units, commercial operators, and SAR teams.
- Use cases: Extended patrol missions, Commercial dive operations, SAR support
Aquafarer Defender 500 (DF500) Commercial / Heavy-Duty Workhorse
Core commercial utility RIB stepping into the 5-meter class within the Defender series, upgraded with a 24° deep V deadrise and an integrated bilge fuel tank.
Compared to the 20° deadrise and external fuel tank of the DF420/DF460, the DF500 upgrades to a 24° offshore deep V aluminum hull.
Key Features
- 5083 Marine-Grade Aluminum Alloy 24° Deep V Hull: 4mm high-tensile aluminum alloy plate combined with 6mm/10mm internal longitudinal and transverse stringers (Stringers)…
- 90L Integrated Bilge Fuel Tank: Recessed in the center of the aluminum alloy bilge, lowering the center of gravity while significantly extending single-trip duty radius.
- Special Operations Expansion: Internal cabin space supports adding dive bottle racks (Dive Rack) and transom heavy-duty ski tow posts (Rear Tow Post)…
Available Colors & Materials
- Fabric: French ORCA® Hypalon or welded seam Valmex® PVC.
Standard Features
- Includes carbon fiber pattern console dash, navigation lights, bilge pump, and switch panel
- Integrated lifting points (Lifting Points), towing eyes (Towing Eyes), and tow cleats
- Suspension seat with shock
Boat weight includes standard SUS700 commercial console and seating, excluding outboard engine weight and fuel.
Why this exists
Commercial operators need a 5m utility RIB with offshore-grade hull and integrated fuel for extended patrol duty.
Product Definition
Who is it for?
A 5.00m commercial RIB with 4mm aluminum 24° offshore deep V hull, 90L integrated fuel tank, rated for 100 HP.
Designed for
Coast guard, patrol units, commercial operators, and SAR teams.
Best For Your Business
Clubs
Core commercial utility RIB with 24° offshore deep V hull and 90L integrated fuel tank.
Use Case
Patrol, SAR, commercial operations, dive support
Operating Cost
Low-moderate — commercial-duty components for daily operation, minimal cosmetic maintenance
Expected Lifespan
10-20 years in commercial service
Why Businesses Choose It
The Defender 500 (DF500) is built for professional duty cycles — heavy-duty protection, commercial paint, and reinforced structure withstand daily commercial use.
Use Cases
Extended patrol missions
Commercial dive operations
SAR support
Utility transport
Skill level
professional
Comparison
How it compares
The DF500 upgrades from 20° to 24° hull, adds 90L integrated fuel tank, and increases to 100 HP — a major step up from DF460.
Frequently Asked Questions
How does the DF500 differ from the DF460? ▼
24° hull (vs 20°), integrated 90L fuel tank (vs external), and 100 HP rating (vs 70 HP).
Can it be equipped with suspension seats? ▼
Yes, professional pneumatic/hydraulic suspension seats are available as options.
Technical Data
Full Specifications
| Overall Length | 5.00 m – 5.10 m / 16' 5' – 16' 9' |
| Internal Length | 4.14 m – 4.16 m / 13' 7' – 13' 8' |
| Beam | 2.23 m – 2.28 m / 7' 4' – 7' 6' |
| Internal Beam | 1.20 m / 3' 11' |
| Deadrise | 24° (offshore-grade commercial deep V hull) / 24° |
| Tube Diameter | 52 cm / 20' / 20.5' |
| Air Chambers | 6 |
| Fuel Tank | 90 L / 23.7 Gal |
| Max Load | 800 kg – 1,051 kg / 1,764 lb – 2,317 lb |
| Max Persons | 10 |
| Boat Weight | 436 kg – 441 kg / 961 lb – 972 lb |
| Max Engine Weight | 170 kg / 375 lb |
| Max Power | 100 HP |
| Recommended Power | 80 HP |
| Engine Shaft | L (Long Shaft / 20') |
| Design Category | Category C (Inshore / Coastal Special Duty Operations) / Category C |
Construction
Materials & Construction
hull
4mm aluminum 24° offshore deep V
tubes
ORCA Hypalon / Valmex PVC 52cm
max engine
100 HP
capacity
10 persons
fuel
90 L integrated bilge
Compliance
Certifications & Compliance
✓
Certifications
CE (2013/53/EU (RCD)) Certified by TÜV Rheinland
ISO 9001:2015 Certified by SGS
BSCI Certified by Intertek
UKCA Certified by Intertek
✓
Material Compliance
REACH (EU)
RoHS (EU)
California Prop 65
✓
Testing & Warranty
ISO 6185 (RIB Safety)
ASTM D751 (Seam Strength)
ISO 12217 (Stability)
Warranty
5 years against manufacturing defects
✔
CE Certified
Independently tested to EU safety standards — TÜV Rheinland.
⚙
ISO 9001:2015
Quality management system certified by SGS since 2022.
✦
Tested to Standard
Every unit pressure tested at 1.25x rated PSI for 24-48 hours.
☆
5-Year Boat Warranty
5-year limited warranty on tube fabric, seams, and hull; 2-year on SUP and accessories. 99.3% defect-free (AQL 2.5/ISO 2859).
⚖
REACH & RoHS
All materials comply with EU chemical and environmental regulations.
★
BSCI Certified
Social compliance audit verified for ethical manufacturing.
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Aquafarer Defender 540 Coaster-style Console (DF540 Coaster-style Console)
The primary focus in the Defender Commercial/Special Utility series, featuring 'Inshore/Offshore Multi-purpose Operations & Exploration Patrol (Coaster Edition)'.
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Aquafarer Defender 600 (DF600) Heavy-Duty Offshore Workhorse
Entering the 6-meter class in the Defender Commercial/Special Operations Series, upgraded with CE Category B offshore certification, serving as the main offshore patrol vessel (Offshore Defender).
Interested in Aquafarer Defender 500 (DF500) Commercial / Heavy-Duty Workhorse?
Contact our team for detailed specifications, pricing, and ordering information.