Generated based on provided specifications. All estimates are preliminary engineering approximations suitable for concept feasibility, not for construction. Assumes Marine Grade Aluminum (5083/5086/6061-T6). "Unsafe" conditions flagged where applicable.
| Parameter | Value | Notes |
|---|---|---|
| Roof Area (Equilateral Triangle, 44ft side) | 836 ft² (77.7 m²) | Area = (√3/4) * a² |
| Usable Area (walkways, hatches, structure) | ~650 ft² (60.4 m²) | ~78% coverage factor |
| Panel Efficiency (Marine Grade, 2024+) | 22.5% | High efficiency monocrystalline |
| Installed Peak Power (DC) | 13.6 kWp | 60.4 m² * 1000 W/m² * 0.225 |
| Derating (Temp, Salt, Angle, Wiring, Age) | 0.72 | Conservative marine derating |
| Effective Peak Power | 9.8 kW |
| Metric | Value |
|---|---|
| Average Peak Sun Hours (Caribbean, Horizontal) | 5.5 hrs/day |
| Average Daily Production (AC) | 53.9 kWh/day |
| Annual Average (Accounting for storms/cloudy weeks) | ~48 kWh/day |
| Parameter | Value |
|---|---|
| Usable Capacity (80% DoD for longevity) | 400 kWh |
| Specific Energy (Pack Level, Marine) | 110 Wh/kg (0.05 lbs/Wh) |
| Total Battery Weight | 25,000 lbs (11,340 kg) |
| Cost @ $90/kWh (Cell/Pack Level 2024/25 est.) | $45,000 |
| Installed Cost (BMS, Fire Suppression, Racks, Wiring) ~1.8x | $81,000 |
| Component | Avg Power (W) | Daily kWh | Duty Cycle / Notes |
|---|---|---|---|
| AC (1 unit running, 2 idle) | 1,200 | 28.8 | 12k BTU Inverter, COP 3.5, 35% duty |
| Refrigeration (Fridge/Freezer) | 150 | 3.6 | High efficiency marine |
| Water Makers (2x, 1 running avg) | 800 | 19.2 | 60 GPH Spectra type, 8 hrs/day |
| Electronics/Nav/Starlink (2x) | 250 | 6.0 | Continuous |
| Lighting / USB / 120V Misc | 300 | 7.2 | |
| Ventilation / Pumps / Controls | 200 | 4.8 | |
| Total Hotel Load | 2,900 W | 69.6 kWh |
Drag Coeff (Cd) Estimates: Superstructure (Triangle wall 44x7 + Roof) ~1.2. Legs (3x NACA 0035, 10.75 submerged, 10.75 exposed) ~0.04 (streamlined) + Struts/Wires. Frontal Area ~ 308 ft² (House) + 70 ft² (Legs/Struts) = 378 ft² (35 m²).
| Wind Speed | Drag Force (lbf) | Thrust Required (lbf) | Propulsive Power (kW) @ 50% Eff |
|---|---|---|---|
| 30 MPH (13.4 m/s) | ~1,100 | 1,100 | ~7.5 kW |
| 40 MPH (17.9 m/s) | ~1,950 | 1,950 | ~17.5 kW |
| 50 MPH (22.4 m/s) | ~3,050 | 3,050 | ~34 kW |
6 x RIM Drives (1.5ft dia). Typical max continuous power ~5-10 kW each. Total max ~30-60 kW. Can hold station up to ~45-50 mph if batteries allow. At 50 mph, 34 kW drains 500 kWh in 14.7 hours (ignoring hotel load).
Lateral Plane Area (3 Legs submerged): 3 * (10.75ft * 2.975ft avg chord) = ~96 ft² (8.9 m²). Aspect Ratio ~ 3.6 (per leg).
Since Hotel Load > Solar Production, Surplus = 0 kW. Cannot cruise 24/7 on solar alone.
If Hotel Load reduced to 1.5 kW (no AC, minimal water): Surplus ~2.5 kW avg. 6 RIM Drives ~ 50% eff at low speed. Thrust Power ~1.25 kW. Resistance @ 3 kts ~ 1.5 kW. Max Solar-Only Speed ~ 2.5 - 3 knots.
Assumptions: 500 kWh Total, 400 kWh Usable (80% DoD). Hotel Load 2.9 kW constant. Propulsion Efficiency 50% (Battery to Thrust). Resistance Curve estimated for 27,500 lbs Displ, 3x Foil Struts, 44ft Triangle House. Stabilizers ON reduces roll/pitch drag slightly but consume ~500W.
| Speed (kts) | Speed (MPH) | Total Drag (lbf) | Prop Power (kW) | Total Power (kW) | Hours (400 kWh) | Range (nm) | Range (Statute Mi) |
|---|---|---|---|---|---|---|---|
| 4 | 4.6 | ~450 | ~5.5 | 8.4 | 47.6 | 190 | 219 |
| 5 | 5.8 | ~750 | ~11.5 | 14.4 | 27.8 | 139 | 160 |
| 6 | 6.9 | ~1,200 | ~22.0 | 24.9 |