2022 Aspen C120

2022 Aspen C120

Aspen C120 on a leisurely cruise
The C120 offers a stable and efficient ride. Courtesy Aspen Power Catamarans

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Overview

Aspen Power Catamarans employ asymmetrical hulls similar to Polynesian proas. These provide stability, seaworthiness, extraordinary efficiency and generous interior space for cruising accommodations. The C120, Aspen’s largest model, features a single Volvo Penta D6 diesel driving a conventional inboard prop shaft at a low, efficient angle. A shallow keel protects the propeller and rudder. Bow and stern thrusters aid maneuverability.

Both hulls of an Aspen are narrow enough for their length to beat the speed limitations of displacement hulls. Our test boat hit a top speed of 22.9 mph. High cruise is an impressive 17.2 mph, while low cruise is 9.1 mph at 4.4 gph, good for passage-making at trawler speed, with enough extra on tap to run ahead of a storm.

Aspen C120 helm
The helm includes multiscreen Garmin electronics and seating for two. Courtesy Aspen Power Catamarans

The genius lies in the fact that the port hull is 35 percent narrower than the starboard, and its actual drag is approximately 50 percent less because it has no keel, shaft, rudder or propeller. The single-engine design also saves machinery weight, which in turn eliminates the need for additional structural components and fuel. These savings reduce the boat’s weight approximately 40 percent, with corresponding efficiency gains.

Aspen C120 salon
The salon is bright and airy with a full galley and dinette. Courtesy Aspen Power Catamarans

Interior and Accessories

The configuration also offers comfortable living space, with a bright, airy pilothouse/salon with a full galley and dinette. The helm includes multiscreen Garmin electronics and seating for two. An optional Aspen Adventure Electronics Package ($43,658) hints at the C120’s designed long-range cruising mission.

Aspen C120 stateroom
There’s a queen berth in the starboard hull. Courtesy Aspen Power Catamarans

Forward, a queen-size berth offers standing headroom on each side. Amidships, there’s a full head with a shower in each hull. Aft, there’s a queen berth in the starboard hull and a single in the port hull. The shaded cockpit offers seating and a teak table. Hatches provide access to the engine and 6 kW Kohler genset. A broad transom platform mounts an ingenious dual-winch system for carrying an 11-foot RIB with a 20 hp outboard. The flybridge offers a second helm, seating for eight, a drawer refrigerator, and a polished teak table with a compass rose inlay.

Read Next: Aspen C108

Aspen C120 head
There’s a full head with a shower in each hull. Courtesy Aspen Power Catamarans

How We Tested 

Engine: Single 435 hp Volvo Penta D6

Drive/Prop: Inboard/23″ x 20″ 4-blade bronze

Gear Ratio: 2:00:1 Fuel Load: 55 gal. Water Load: 80 gal. Waste Load: 15 gal. Crew Weight: 760 lb.

High Points

  • Patented proa-style hull delivers high efficiency and solid seaworthiness.
  • Design ingenuity is evident throughout.
  • YouTube video series is full of systems explanations and operating tips.

Low Points

  • There’s no option for a washer-dryer, something long-range cruisers demand.
  • Dependence on bow and stern thrusters for maneuvering requires a complex battery subsystem that demands careful monitoring and maintenance.

Toughest Competitor

There’s no other proa cats that we know of, but check out the Fountain Pajot MY4.S ($827,867 with twin 250 hp engines). Its two hulls are similar, with twin diesel inboard engines of 150 or 250 hp. It offers redundant safety and is faster at wide-open throttle, at about 25 mph. But it can’t match the Aspen’s range and efficiency.

Pricing and Specs

Price: $1,208,950 (MSRP at press time; check website for updates)
LOA: 42’6″ (with folding swim step)
Beam: 13’10”
Draft: 3’3″
Displacement: 22,500 lb. (est.)
Transom Deadrise: NA
Bridge Clearance: 12’7″ (arch down); 18’6″ (arch up)
Max Cabin Headroom: 6’4″
Fuel Capacity: 220 gal.
Water Capacity: 100 gal. (11 hot)
Waste Capacity: 83 gal.
Max Horsepower: 440
Available Power: Single 330 or 440 hp Volvo Penta D6 diesel inboard

Speed, Efficiency, Operation

Aspen C120 performance date
Aspen C120 Certified Test Results Boating Magazine

Aspen Power Catamarans – Burlington, Washington; 360-668-4347; aspenpowercatamarans.com

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