Roti Proa II, sailing close-haul, isometric view generated from FreeCAD design
Vision: Scaling Up for Multi-Day Voyages
| Status: 🔵 Design Phase | Target: Mid-2027 validation |
Roti Proa III represents our vision for carbon-neutral multi-day coastal cruising in tropical Southeast Asia. Building on the lessons from RP1 (prototype) and RP2 (day tourism), RP3 will demonstrate that solar-electric propulsion can support extended voyages with overnight accommodation.
Design Concept
Roti Proa III will be based on a Dragon Boat DB22 hull - a proven traditional design that offers:
- Optimal length-to-beam ratio for efficient electric propulsion
- Proven seaworthiness in Southeast Asian waters
- Cultural significance connecting to regional maritime heritage
- Ample interior volume for passenger accommodation
- Established construction methods for reliable building
Why Dragon Boat Heritage?
Dragon boats have been used across Asia for over 2,000 years. The DB22 design represents centuries of refinement for tropical coastal waters - exactly our operational environment. By adapting this traditional hull to modern solar-electric propulsion, we honor maritime tradition while pioneering sustainable technology.
Preliminary Specifications
| Specification | Estimated Value |
|---|---|
| Overall Length (LOA) | 13 m |
| Beam (hull) | 1.2 m (traditional dragon boat proportions) |
| Beam (with outrigger) | 7.5 m |
| Capacity | 5-6 passengers + 2 crew |
| Solar Power | 6-8kW peak (estimated) |
| Motor Power | 5-6kW electric (estimated) |
| Cruising Speed | 8-10 knots |
| Range | Multi-day (100+ nautical miles) |
| Accommodation | Sleeping quarters for passengers |
| Galley | Electric cooking from solar excess |
| Water | Integrated desalination capability |
Note: Specifications are preliminary and subject to refinement during detailed design phase
Key Innovations for Multi-Day Operation
Extended Solar Capacity:
- Larger solar array (6-8kW) for overnight battery charging
- Excess power for onboard cooking and water desalination
- Shore power compatibility for dock charging
Accommodation Design:
- Sleeping berths for 5-6 passengers
- Covered deck area for weather protection
- Galley with electric cooking facilities
- Freshwater storage and desalination
- Marine toilet facilities
Enhanced Sailing Rig:
- Scaled-up version of RP2’s proven shunting design
- Increased sail area for long-distance passages
- Storm rig capability for safety
Redundant Systems:
- Dual motor configuration option
- Backup sailing capability
- Enhanced battery capacity for overnight operations
Development Timeline
2026 Q4: Hull design finalization based on DB22 platform
2027 Q1-Q2: Construction and system integration
2027 Q2-Q3: Sea trials and certification
2027 Q4: Commercial validation with strategic partners
Target Applications
Multi-Day Eco-Tourism:
- Island-hopping expeditions (3-5 days)
- Marine wildlife observation cruises
- Cultural heritage coastal tours
- Educational sailing experiences
- Slow travel experiences connecting coastal communities
Operational Advantages:
- Zero fuel costs on multi-day voyages
- Quiet operation for wildlife observation
- Onboard cooking without diesel generators
- Fresh water generation from excess solar
- Premium eco-tourism positioning
Design Philosophy
Roti Proa III embodies our core principle: combining Southeast Asian maritime traditions with cutting-edge sustainable technology.
The dragon boat hull represents 2,000+ years of Asian maritime engineering. Our contribution is adapting this proven design for the 21st century - replacing human paddlers with solar-electric propulsion while maintaining the hull’s fundamental efficiency and seaworthiness.
This isn’t just about technology transfer; it’s about cultural continuity - showing that traditional designs remain relevant when paired with modern sustainability solutions.
Partnership Opportunities
RP3 development presents unique opportunities for strategic partners interested in:
- Early-stage design collaboration on multi-day eco-tourism vessels
- Field testing participation in 2027 validation phase
- Market validation for premium sustainable tourism experiences
- Technology demonstration for corporate sustainability initiatives
The 2027 timeline allows partners to influence design decisions while maintaining exposure to a novel market segment.
From Prototype to Production
RP3 (2025): Proved the concept
RP2 (2026): Validates commercial day-tourism operations
RP3 (2027): Demonstrates multi-day voyage capability
This progression de-risks the technology while building toward our ultimate vision: a fleet of carbon-neutral vessels serving Southeast Asia’s coastal eco-tourism market.
| ← Back to Home | View RP1 → | View RP2 → |