HKSTP Incubation & Feasibility Study
DOC ID: AM-EF150-FS-2026 (REVISED V3.0)

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
30.0 NM
(w/ 20% Regulatory Reserve)
Est. Battery Capacity
1.2 MWh
800V Marine LFP Architecture
Turnaround Target
20 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.

INTERACTIVE SCHEMATIC VIEWER
0102030405 ABCD TOP-DOWN VIEW (PLAN) LOA 3.56m | BOA 1.22m UNCREWED AVIONICS BAY FORWARD LiDAR LOA: 3.56 METERS PORT SIDE ELEVATION DYNAMIC RUNNING MODES 1.0 kW POD WATERLINE (FOILING) 100Hz FLAP ACTUATOR WATERLINE (DISPLACEMENT) BOTTOM-UP UNDERCARRIAGE SUBMERGED FOIL GEOMETRY & POD LAYOUT SUBMERGED FLAPS SPAN: 1.22m CFD HYDRODYNAMIC FLOW ANALYSIS L/D EFFICIENCY & WAVE PATTERN LIFT (L) DRAG (D) THRUST (T) AERO-MARINE SYSTEMS // HONG KONG PROJECT: BAYWING-D1 (1:8 DEMONSTRATOR) SCALE: 1:8 FROUDE DYNAMIC MODEL DOC ID: AM-EF150-FS-2026 DISPLACEMENT: 109 KG SPEED: 13.4 KNOTS (Fn 1.17) STATUS: HKSTP FEASIBILITY PASS
Forward LiDAR Provides wave feedforward compensation for the 100Hz flight controller, anticipating surface chop before the struts impact.
Uncrewed Avionics Bay Houses the Dual STM32H7 / Jetson Orin Nano flight computers, SBG INS, and the 1.0 kWh 48V LFP power bank.
Subsea Rotary Servos IP68-rated waterproof actuators. Adjusts submerged trailing-edge flaps 100 times per second to actively neutralize pitch and roll.
2x 1.0 kW Pod Drives Froude-scaled thrust accurately simulating the 1,300 kW full-scale propulsion system at 13.4 knots.
HOVER OVER HIGHLIGHTED COMPONENTS FOR TECHNICAL DATA
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 = 1.17). 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: 1.0 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
Cruise Take-off Speed 18.0 Knots (Take-off) / 38.0 Knots (Cruise) 6.4 Knots (Take-off) / 13.4 Knots (Cruise) 1 : √λ
Installed Powertrain 2x 650 kW Pod Drives 2x 1.0 kW Pods (2.0 kW Total) Power Reqd ∝ λ3.5
Battery Mass Budget 1.2 MWh (~8,500 kg) 1.0 kWh 48V LFP (~10 kg) Sustains < 109 kg envelope
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. Data is calibrated for HKMD COLREGs speed restrictions (12-knot displacement mode within Victoria Harbour limits before foiling in open waters).

INTERACTIVE FINANCIAL SIMULATOR

Fleet OPEX Projection Model

BASELINE MGO DIESEL: $22.50 USD / NM
2. Active Fleet Size 4 VESSELS
1 Unit 6 Units 12 Units
3. Daily Round Trips / Vessel 4 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.

0102030405 ABCD TOP-DOWN PLAN: 150-PASSENGER CABIN LOA 28.50m (93.5 FT) | FOIL SPAN 9.80m 150 PASSENGERS + 4 CREW FCS LOA: 28.50 METERS (93.5 FT) PORT SIDE PROFILE (FOIL-BORNE) 80% HYDRODYNAMIC DRAG DECOUPLING 2x 650 kW PODS CRUISE WATERLINE (38 KNOTS) RIDE CLEARANCE: 1.8m REAR TRANSOM & HYDROFOIL ARRANGEMENT INVERTED-V FOIL AFT ARCHITECTURE BOARDING ACCESS & GATES INVERTED V-FOIL (AFT) 3.5 MW MCS CHARGING ARM DOCK INTERACTION 20-MINUTE ULTRA-FAST TURNAROUND SYSTEM FERRY PIER 4.0 MWh BESS GRID BUFFER 3.5 MW MCS ARM RECEPTACLE CHARGING CYCLE: 11 MINS FULL TURNAROUND TARGET: < 20 MINS AERO-MARINE SYSTEMS // GREATER BAY AREA VESSEL: BAYWING EF-150 EXPRESS CAPACITY: 150 PASSENGERS + 4 CREW BATTERY: 1.2 MWh 800V DC (LFP) ALL-UP DISP: 56 TONNES CRUISE SPEED: 38.0 KNOTS CLASSIFICATION: DNV HSLC COMPLIANT
PLATFORM ARCHITECTURE: BAYWING EF-150 REVISED DRAFT v3.0
1. Vessel Dimensions & Capacity
Length Overall (LOA) 28.50 Meters (93.5 ft)
Displacement Limit 56,000 kg (56 Tonnes)
Passenger Capacity 150 Passengers + 4 Crew (13.1t Payload)
2. Hydrodynamics & Power
Foil Configuration Fully Submerged T-Foil (Forward) & Inverted V-Foil (Aft)
Target Lift-to-Drag (L/D) ~9.8 L/D Ratio (Conservative Aerodynamic Profile)
Cruise Power Draw ~1,100 kW @ 38 Knots
3. Infrastructure & Turnaround Target
Storage Architecture 1,200 kWh (1.2 MWh), 800V DC Nominal (~8.5t Mass)
Operational Range 30 NM (Accommodates 22 NM route + 20% Regulatory Reserve)
Turnaround Target 20 MINS (3.5 MW Automated MCS replenishes ~640 kWh in ~11 mins)
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. Capitalization & COTS R&D Budget

Public Funding & Working Capital Architecture

Aero-Marine Systems utilizes a highly leveraged grant stack to execute the BAYWING-D1 hardware demonstrator. Because the HKSTP Incu-Tech and ITF Research Talent Hub operate on a reimbursement basis, we are securing an initial "Float Capital" bridge facility (via commercial venture debt or angel injection). This bridges cash flow, covers the PAG 10% co-pay, and secures specific Commercial Off-The-Shelf (COTS) aerospace components while ensuring zero interruption to the R&D timeline while awaiting government disbursements.

AI-Optimized Lean Engineering: To build the BAYWING-D1 under a strict HK$ 3.99M public funding envelope, we utilize AI coding agents for GNC (Guidance, Navigation, and Control) software generation and AI-assisted OpenFOAM CFD scripting. This reduces traditional maritime engineering labor requirements from a team of 4–5 down to a lean core team of 2 (fully subsidized by the RTH grant), allowing the bulk of the HKSTP subsidy to be deployed into pure hardware and testing capabilities.

DEMONSTRATOR (D1) AI-OPTIMIZED BUDGET BREAKDOWN HK$ 3,990,000
Budget Category AI-Driven Strategy & Allocation Details Allocation (HKD)
1. Founder Living Allowance Sustains lead founder during core R&D (HKSTP flexible operational subsidy) $720,000
2. Core Staff (1 Engineer) 1x Mechatronics Lead. GNC logic heavily augmented by AI code-gen (RTH Subsidized) $1,450,000
3. COTS Hardware & Sensors Jetson Orin Nano, SBG INS, Ouster LiDAR, Torqeedo pods (HKSTP Prototyping) $800,000
4. Hull Mfg & Tooling AI-optimized CAD driving CNC foam milling & carbon infusion (Smart Mobility Fund) $500,000
5. Testing & Water Permits Tolo Harbour site allowances, telemetry gear, chase boats (HKSTP Operations) $200,000
6. Intellectual Property PCT Filing & GBA Regional Patent Prosecution (PAG 90% Subsidized) $120,000
LEVERAGED PUBLIC CAPITAL STACK

Total Demonstrator Capitalization: HK$ 3,990,000

Seed Bridge Facility / Float Capital (~25%): HK$ 1,000,000
HKSTP Incu-Tech Subsidy
HK$ 1,290,000
Tooling, lab rent, testing permits & operational allowance (Reimbursement).
ITF Research Talent Hub
HK$ 1,450,000
100% Gov-paid salaries for 2 full-time control engineers (Reimbursement).
Patent Application Grant
HK$ 250,000
PAG grant directly covering up to 90% of PCT & regional patent filings.
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 COLREGs Compliance: Vessel heavily optimized for efficient 12-knot displacement mode to comply with inner Victoria Harbour collision avoidance speed limits prior to taking off in open waters.
  • ▸ HKMD / MSA Certification: Pathway defined for Local Vessel operation within Hong Kong and GBA cross-boundary waters.
  • ▸ Autonomous Testing Exemption: D1 test permit cleared through Marine Department uncrewed vessel trials channel in Tolo waters.