HammerCat Concept

Fast, Luxurious, Light and Fuel Efficient.

The HammerCaT Concept by Hammer Yachts


The HammerCat 35 is the next generation of sport fishing power catamarans. The design concept was to pencil an elegant, fast, fuel efficient and modern power catamaran in the mid 30’ range. 

The impressive “Carolina bow” gives the impression of a much larger vessel. The substantial raised bow allows for superior speeds even in adverse conditions. The gunnel on the aft of the vessel is slightly lowered. This distance from the topside / gunnel to the surface of the water is decreased on purpose so that your fish can easily be lifted onboard. In between the engines there is a marlin door to move those extra-large fish onboard with having to be raise them over the side. The gunnel has been designed to accommodate / squeeze your knees under the gunnel, the safest way of fishing. Going forward a full-length rail has been added to the top of the gunnel to hold on to. 

The stern of the vessel has a cut-out just in front of the engines (underside of the hull). This feature allows for faster backing up / reverse following the fish once the big one is hooked. 

The tunnel / bridge deck is significantly higher on the HammerCat 35 as compared to other power catamarans, this will allow for a softer ride. The bridge clearance when underway is 500mm / almost 2’. Most power catamarans suffer from “Front splash”, water that is coming back from the inside tunnel towards the bow. The HammerCat 35 has a negative angle in bow so the water is pushed down, and prevents slapping / coughing in between the 2 hulls. This feature can be seen from about 3’ / 1m from the bow area into the tunnel. Two steps were added to the underwater body to generate aeration (air cushion) under the hull while traveling at high speed. 

Particular attention was paid to the weight distribution. Catamaran don’t like weight in the bow / stern of the yacht. Our tankage is located below deck in the hulls right around the center of gravity, ensuring a smooth ride. 

The weight of the vessel is 40% less than our competition. This means we need less power to achieve similar speeds. With the 2 x 210 Gl. /800L of fuel, the HammerCat 35 can run to remote fishing grounds (and back!)

Strong yet light weight construction, efficient underwater body and balanced weight distribution result in an amazingly efficient vessel.

Power will be provided by outboard engines: The base package is 2 x 225HP (cruise at 35-40 knots, top speed 50+ knots), this can be upgraded to 2 x 350HP or 2 x 400HP. The HammerCat 35 is also able to accommodate quad engines: 4 x 200HP. Max horsepower rating is 800.

Range and fuel consumption of base package 2 x 225HP:

  • 30 Knots 3500 RPM .8 Gl /m 24 gl/hr
  • 40 Knots 4100 RPM .8 Gl /m 32 gl/hr
  • 54 Knots 5200 RPM 1.2 Gl/m 64 gl/hr
  • Range: 420 Gl fuel at .8 Gl /m = 525 Nm. (enough for a round trip Ft Lauderdale – Staniel Cay)


Deck: The deck design has its back ground in commercial fishing for efficiency and a no-nonsense approach. The false transom has a marlin door (and folding swimming ladder) in the center and two large live bait wells on both corners. The advantage of placing the bait wells on the corners is the added depth on the corners of the boat as opposed to restriction of placing a bait well on the centerline. The deck will have 2 x forward fish boxes  of 8’ and 2 x aft fish boxes.
Helm station: The lay out of the helm station allows for 2 x 24” screens  (unheard of for a 35’) and has flat areas for storage of phones & sunglasses.  Inside the helm station is space for an optional electric head / holding tank. Three Lebroc helm seats with folding bolsters ensure a comfortable ride. The aft facing workstation has a large work area (with sink) and a cooler under one of the aft seats. Forward of the helm station is a double seat with access to storage underneath. The helm station is covered by a hardtop that supports outriggers / center rigger and up to 8 rod holders.
Deck drainage is pipe-less and simple. No blocked pipes with fish remains due to slightly angled drain into port and starboard gunnels, both fore- aft as well as to inside- outside.

The HammerCat 34 is built at the Carbo Tech yard in Cape town, South Africa, a boutique boat yard that is specialized in light weight-high-end yacht-building.

Uwe Jaspersen is a well-known figure in the south African boat building scene, he is the original founder of the Southern Wind boat yard, and is responsible for dozens of new build yachts and catamarans, amongst which  the 62’ series Gunboats which are now considered the pinnacles of Gunboats

The HammerCat 35 is a modular build vessel, (hull, gunnels, deck, center console) which allows us to be creative: we will soon announce a sport cabin version with enclosed foredeck and accommodation based on the same hull but with a different deck / top.