HKSTP Incubation & Feasibility Study
DOC ID: AM-EF150-FS-2026

BAYWING EF-150 EXPRESS Active Fly-by-Wire Electric Hydrofoil Platform

Aero-Marine Systems is building the software-defined future of GBA maritime transit. By integrating aerospace-grade flight control algorithms with Pearl River Delta carbon-composite supply chains, the EF-150 architecture completely decouples the hull from hydrodynamic drag—slashing energy requirements by 80% and making high-speed electric commuter routes commercially viable.

Target Operational Envelope 150 PASSENGER CLASS
Target Cruise Speed
38.0 KNOTS
(70.3 km/h Foil-borne)
Effective Range
45.0 NM
(w/ 20% Regulatory Reserve)
Est. Battery Capacity
2.4 MWh
800V Marine LFP Architecture
Turnaround Target
45 MINS
3.5 MW Automated Charging
1. Sub-Scale Technology Demonstrator

BAYWING-D1 (1:8 Scale Autonomous Testbed)

High-speed hydrofoiling is fundamentally an aerospace control problem. Because dynamic instability scales inversely with physical size, a sub-scale 3.56-meter vessel experiences higher natural oscillation frequencies than the full 28.5-meter craft. Successfully stabilizing the D1 in real-world harbor sea-states completely de-risks the flight control stack before scaling up to intermediate 20–30 passenger hulls and the final EF-150 platform.

Avionics & Sensor Fusion 100 Hz Loop

Autonomous Flight Controller

Dual deterministic microcontrollers running real-time RTOS. Ingests dual IMUs, high-speed ultrasonic ride-height sensors, and a forward-scanning micro-LiDAR for wave feedforward compensation.

  • Compute: STM32H7 + Jetson Orin Nano
  • Latency: < 8ms Actuator Response
  • Telemetry: 4G/5G + LoRa Long Range
Hydrodynamics & Scaling Froude Scaled

True Dynamic Similarity

Scaled strictly according to Froude number criteria (Fn = v/√(gL)). Operating at 13.4 knots simulates the wave-making, cavitation boundaries, and flap dynamics of the full-scale vessel at 38 knots.

  • Scale Factor: 1:8 Linear (λ = 8)
  • Model Speed: 13.4 Knots (24.8 km/h)
  • Model Mass: ~109 kg (Displacement)
Zero-Grid R&D Deployment Low OPEX Testing

Tolo Harbour Test Protocol

Tested directly offshore at Hong Kong Science Park (Pak Shek Kok waterfront / Tolo Harbour). Swappable 48V LFP batteries eliminate shore charging needs during R&D, slashing sea-trial costs.

  • Test Location: HKSTP Tolo Harbour Slipway
  • Battery: 2.5 kWh Swappable 48V LFP
  • Runtime / Pack: ~45 Mins Foil-borne
PHYSICS & SCALING MATRIX: EF-150 vs. BAYWING-D1 DEMONSTRATOR Froude Number: 1.17
Engineering Parameter Full-Scale EF-150 (Commercial) BAYWING-D1 (1:8 Demonstrator) Scaling Law
Length Overall (LOA) 28.50 m (93.5 ft) 3.56 m (11.7 ft) 1 : λ (λ = 8)
Foil Span (Beam) 9.80 m 1.22 m 1 : λ
All-Up Displacement Mass ~56,000 kg ~109 kg 1 : λ³ (× 1/512)
Cruise Take-off Speed 18.0 Knots (Take-off) / 38.0 Knots (Cruise) 6.4 Knots (Take-off) / 13.4 Knots (Cruise) 1 : √λ (× 1/2.83)
Installed Powertrain 2x 650 kW Pod Drives (1,300 kW Total) 2x 5.0 kW Brushless Pods (10 kW Total) Power Reqd ∝ λ3.5
Flight Controller Frequency 100 Hz Loop (Triple Redundant) 100 Hz Loop (Deterministic Dual-Core) Oversampled (Higher bandwidth vs scaled craft)
Primary Development Phase Phase 3 (Full Commercial Build) Phase 1 & 2 (HKSTP Incubation Core) Zero-capex risk burn-in
2. Deep Tech Moat & Economics

Defensible OPEX Advantages

Legacy fast ferries rely on multi-megawatt diesel gas turbines pushing heavy displacement hulls. High marine fuel costs and escalating engine overhaul expenses compress operating margins. Our Fly-by-Wire control system enables a thermodynamic shift.

01. Platform Dynamics
80%

Drag Reduction

Fully submerged T-foils lift the hull completely above the waves at 18+ knots, decoupling the vessel from hydrodynamic displacement drag.

Cruise Power: ~1,100 kW
02. Core IP Moat
100Hz

Active FCS Loop

Triple-redundant Fly-by-Wire software reads IMUs and LiDAR, adjusting submerged flaps 100x/sec to neutralize Victoria Harbour wake pitch and roll.

Wake Wash: <0.15m
03. Infrastructure
4.0MWh

Shore BESS Buffer

Dockside battery storage buffers the 3.5 MW Megawatt Charging System (MCS), enabling rapid turnarounds without crashing the local municipal grid.

Charge Rate: 3.5 MW DC
04. Route Yield
78%

OPEX Savings

Direct electric pod drives yield ~$4.90 USD/NM energy costs, compared to ~$22.50 USD/NM for legacy marine gas oil turbines.

Energy OPEX: ~$4.90 USD / NM
3. Strategic Route Analytics

GBA Route Feasibility Calculator

Simulate the financial viability of replacing legacy diesel vessels with the EF-150 platform across major Greater Bay Area transit corridors.

INTERACTIVE FINANCIAL SIMULATOR

Fleet OPEX Projection Model

BASELINE MGO DIESEL: $2.20 USD / Liter
2. Active Fleet Size 4 VESSELS
1 Unit 6 Units 12 Units
3. Daily Round Trips / Vessel 8 TRIPS
2 Trips 8 Trips 16 Trips
Annual Energy Savings
$0.00 M
VS Legacy Diesel Catamaran
Est. CapEx Premium Payback
0.0 YRS
On EV Platform Premium Cost
Annual CO2 Avoided
0 T
Metric Tons GHG / Year
Est. EF-150 Transit Time
0 MINS
Faster than Diesel
Annual Energy Cost (Legacy Diesel Fleet) $0.00M
Annual Energy Cost (EF-150 Electric Fleet) $0.00M
4. Technical Data Bank

Proposed Engineering Matrix

Baseline structural and operational parameters proposed for the EF-150 platform architecture, updated for physics constraints and marine certification standards.

PLATFORM ARCHITECTURE: BAYWING EF-150 REVISED DRAFT v2.1
1. Vessel Dimensions & Capacity
Length Overall (LOA) 28.50 Meters (93.5 ft)
Beam Overall (BoA) 8.20 Meters (Foil Span 9.80m)
Passenger Capacity 150 Passengers + 4 Crew
2. Hydrodynamics & Efficiency
Foil Configuration Fully Submerged T-Foil (Forward) & Inverted V-Foil (Aft)
Target Drag Reduction 80% vs Equivalent Displacement Catamaran
Harbor Wake Wash < 0.15m at Cruise Speed
3. Power & Infrastructure Target
Storage Architecture 2,400 kWh (2.4 MWh), 800V DC Nominal
Cruise Power Draw ~1,100 kW @ 38 Knots
Operational Range 45 NM (Incorporating 20% Regulatory Safety Reserve)
4. Flight Control System (FCS)
Flight Controller Triple-Redundant Active Fly-by-Wire Flight Management Unit
Control Loop Rate 100 Hz Dynamic Flap & Trim Actuation Loop
Sensor Fusion Inertial Measurement Units (IMUs), Ultrasonic Height, Forward LiDAR
5. Shore Charging & Energy Buffer
Stationary BESS Buffer 4.0 MWh Containerized Battery Buffer (Dockside Peak Shaving)
Charging Standard 3.5 MW Automated MCS (Megawatt Charging System) Arm
5. Non-Dilutive Capitalization & Data Room

Zero-Capital Public Funding Architecture

Aero-Marine Systems is structured to require $0 founder private bankroll. By stacking HKSTP Incu-Tech milestones with the Hong Kong Innovation and Technology Commission’s Research Talent Hub (RTH-SPC) and Green Tech/Smart Mobility grant allowances, 100% of the BAYWING-D1 demonstrator build is subsidized by non-dilutive government capital.

100% NON-DILUTIVE PUBLIC CAPITAL STACK

Demonstrator (D1) R&D Budget: HK$ 3,990,000

Founder Private Cash Injection: HK$ 0.00 (Zero Self-Funding)
HKSTP Incu-Tech Subsidy
HK$ 1,290,000
Tooling, lab rent, testing permits & operational allowance.
ITF Research Talent Hub
HK$ 1,450,000
100% Gov-paid salaries for 2 full-time control engineers.
Patent Application Grant
HK$ 250,000
PAG grant directly covering PCT & regional patent filings.
Smart Mobility / Green Tech
HK$ 1,000,000
Hardware prototyping & PRD maritime supply chain grant.
Phase Development Roadmap
  • ▸ Phase 1 (Months 1-9): 6-DoF Digital Twin, FCS Bench Testing, & Hardware-in-the-Loop simulation in HKSTP Robotics Lab.
  • ▸ Phase 2 (Months 10-18): Sub-scale D1 technology demonstrator (3.56m) sea trials in Tolo Harbour; 100Hz wave-decoupling validation.
  • ▸ Phase 3 (Months 19-27): Intermediate 20-30 passenger pilot platform design; joint commercial consortium formation.
  • ▸ Phase 4 (Months 28-36): Full commercial EF-150 platform constructed via licensed PRD composite shipyard.
Regulatory & Classification Path
  • ▸ DNV Classification: Adherence to High Speed Light Craft (HSLC) rules for novel composite hydrofoil structures.
  • ▸ HKMD / MSA Certification: Pathway defined for Local Vessel operation within Hong Kong and GBA cross-boundary waters.
  • ▸ Inner-Harbor Wake Exemption: Seeking clearance for elevated speeds in Victoria Harbour due to < 0.15m wake wash profile.
  • ▸ Autonomous Testing Exemption: D1 test permit cleared through Marine Department uncrewed vessel trials channel in Tolo waters.
EF-150 Fleet Economics Breakdown
Metric Legacy Diesel EF-150 Electric
Energy/Fuel ~$22.50 USD / NM ~$4.90 USD / NM
Powertrain Maintenance High (Gas Turbines) Low (Pod Drives)
Crew Complement Standard (8-10) Reduced (4)
MCS Terminal & BESS Integration
  • ▸ Dockside Buffer: Onshore 4.0 MWh BESS eliminates high-voltage grid upgrades at public ferry piers.
  • ▸ Megawatt Charge Rate: 3.5 MW DC output compatible with marine MCS standards.
  • ▸ Turnaround Window: < 45-minute charge cycle (20% to 90% SOC) during passenger disembarkation.