Aluminum Catamaran Boat

Aluminum Catamaran Boats for Commercial, Government, and Leisure

Qingdao Dookyu Marine Co., Ltd. designs and builds twin‑hull vessels in marine‑grade aluminum for passenger transport, patrol, rescue/firefighting, fishing, and private leisure. The range spans 6–23 m with configurable hulls, deck layouts, and propulsion (outboard, inboard diesel, electric, or hybrid). Integrated design, engineering, manufacturing, and service help deliver consistent quality from concept to certified delivery.

Why Choose a Twin‑Hull Platform

• Stability, capacity, comfort: Two slender hulls provide strong transverse stability and low motion at rest. A wide beam increases usable deck area and seating while keeping shallow‑water access and precise handling. This improves comfort and confidence for crews and passengers.


• Strength‑to‑weight and durability: Marine‑grade aluminum offers high structural efficiency and damage tolerance. It resists abrasion and impact, and it is straightforward to repair and refit, supporting long service life and evolving missions.


• Low lifecycle cost and maintenance: Corrosion‑resistant alloys, welded structures, and accessible systems help reduce downtime. Painted or bare‑metal finishes and standardized components simplify inspection and replacement, supporting demanding schedules.

Hull Architecture and On‑Water Performance

We match demi‑hull shapes, tunnel clearance, and beam‑to‑length ratios to the mission. High tunnel clearance limits slamming. Spray rails and chine geometry help keep decks drier. Watertight compartments, collision bulkheads, non‑slip work areas, and clear sightlines support safe operations in coastal and offshore conditions.

Propulsion and Power Options

• Outboards: Twin to quad installations offer redundancy, shallow draft, and straightforward servicing. Brackets and transoms are tuned for clean flow and correct trim.


• Inboard diesel: Shaft, sterndrive, or waterjet options deliver torque and economy for high‑duty cycles. Engine rooms are arranged for access, ventilation, and noise control.


• Electric and hybrid: Battery‑electric or hybrid packages reduce local emissions and noise. Regeneration, shore charging, and genset‑assist can be tailored to route and duty cycle.

Sizes and Typical Uses

• 6–9 m compact cats: Open decks for harbor services, fishing, diving, and resort transfer. Configure with T‑tops, removable seating, and task‑specific modules.


• 10–15 m multi‑role vessels: Platforms for patrol, rescue, crew transfer, and tourism. Options include enclosed cabins, climate control, shock‑mitigating seats, and accessible boarding.


• 16–23 m passenger and offshore craft: High‑capacity interiors with lounges, galley options, and luggage racks. Engineered for schedule reliability and comfort at service speeds.

Equipment and Custom Outfitting

Navigation and comms (radar, AIS, chartplotters), safety systems (thermal cameras, searchlights), deck gear (cranes, dive ladders, fire pumps), and comfort options (galley, heads, entertainment) are modular and scalable. Layouts are tailored to the role: passenger seating and luggage zones; patrol/rescue with 360° helm, towing points, and medical bench; fishing/dive with live wells, rod/tank storage, and wide swim platforms. Interior finishes range from wipe‑clean utility to premium wood and soft furnishings. Hull colors, antifouling, branding, ramps, and handrails align the vessel with service image and accessibility needs.

Construction and Certification

Structures use 5083/5086 aluminum plates and extrusions for strength, corrosion resistance, and weldability. CNC cutting, controlled forming, and skilled welding deliver accuracy and repeatability. Coatings and anodes are selected for local water chemistry. Designs undergo reviews, stability and load tests, and process inspections to support ISO/CE compliance with full documentation.

Recent Projects

• 38‑ft aluminum sailing catamaran: A performance‑cruising platform with an efficient sail plan and customizable 3–4 cabin interiors.


• 19 m twin‑engine passenger catamaran: Spacious saloon seating, luggage storage, and weather‑resistant boarding, tuned for reliable scheduled routes.

FAQ

How do I choose between outboards, sterndrives, shafts, or waterjets?

Match the choice to duty cycle, target speed, draft limits, debris risk, and maintenance preferences. We provide proposals with pros and cons for each route profile.

What certifications can these vessels achieve?

Designs are developed to meet ISO/CE requirements. Stability and load tests are conducted, and traceable documentation is provided at delivery.

What routine maintenance does marine‑grade aluminum require?

Inspect anodes, coatings, and welds regularly, rinse after use, and follow scheduled service for engines and electrical systems. Most repairs are straightforward and quick.

What information do you need for a quotation?

Mission profile, passenger/cargo numbers, speed and range targets, sea state, and preferred propulsion. Layout preferences and equipment priorities also help.

Request a Proposal

Share your mission, capacity, and performance targets to receive layouts, equipment options, and timelines. Contact the Aluminum Catamaran Boat manufacturer team at Qingdao Dookyu Marine Co., Ltd. to start your project.