Circle One 5'11" Heritage Keel Twin Fish Review: Classic Style, Modern Performance
There are surfboards that follow trends, and then there are boards that celebrate surfing's roots while embracing modern performance. The Circle One 5'11" Heritage Twin Fish does exactly that, combining the speed and flow of a classic 1970s fish with contemporary materials and shaping techniques to create a board that's built for today's surfers.
Whether you're looking for a dedicated small-wave weapon or simply want to experience the smooth, flowing feeling that twin fins are famous for, this board deserves a place on your radar.
A Modern Take on a Surfing Classic
The Heritage Keel Twin Fish pays tribute to one of surfing's most iconic designs. Originally popularised in the 1970s, fish surfboards became legendary for their incredible speed, effortless wave-catching ability and loose, skate-like feel.
Circle One has modernised that timeless concept with a shape designed by founder and veteran shaper Jeff Townsley. Instead of simply recreating a retro board, they've refined it for today's surfers by blending heritage styling with modern construction and performance features.
At 5'11" x 20½" x 2½", with 32.69 litres of volume, the Heritage Keel Twin Fish packs plenty of paddle power without sacrificing manoeuvrability.
The wider outline helps you generate speed naturally, making it perfect for those average beach break days when a standard shortboard can feel sluggish. Rather than pumping endlessly to stay moving, the board creates its own momentum, allowing you to glide across flat sections with ease. (SEE THE VIDEO BELOW).
This makes it an excellent option for UK surfers who spend much of the year riding waist-to-head-high waves that lack serious power.
Why Twin Fins Feel Different
If you've only ever ridden thrusters, the first thing you'll notice is how free the board feels.
Removing the centre fin reduces drag, allowing the board to accelerate quickly and transition smoothly from rail to rail. Twin fins reward flowing lines rather than abrupt, vertical surfing.
Many surfers describe the sensation as "skatey"—fast, playful and incredibly fun.
That's exactly why twin fish boards have seen such a resurgence in recent years. They're all about drawing longer, stylish turns while generating speed effortlessly. Community discussions among experienced surfers often highlight twin fish designs as some of the most enjoyable boards for weaker surf, even if they don't offer the same level of control as a thruster in steep, hollow waves.
Modern Performance Underneath
What separates the Heritage Twin Fish from many retro-inspired boards is its bottom contour.
The Twin Keel by Circle One uses a single concave under the front foot that transitions into a deep double concave through the fins. This channels water efficiently through the tail, improving lift, acceleration and responsiveness while preventing the wider fish tail from feeling sticky.
The result is a board that keeps the classic fish personality but feels much more refined under your feet.
But performance isn't only about shape.
The Heritage Twin Fish is built using:
- High-density EPS foam core
- Epoxy resin construction
- Premium Porcher E-Glass fibreglass
- Crosslink deck and rail reinforcement
- Full-length 4-ply wood stringer
- Gloss resin tint finish
Each board is individually shaped, laminated and finished rather than mass-produced from moulds, giving every board its own unique character while maintaining excellent durability and a strong strength-to-weight ratio.
Another standout feature of the Heritage Twin Fish is its FCS II fin system. Unlike traditional screw-in fin setups, FCS II allows you to install or remove your fins in seconds without needing tools (although fin screws can still be used for extra security if preferred). This makes it incredibly easy to experiment with different fin templates and materials to fine-tune your board's performance. Whether you prefer a looser, more playful feel or want extra hold through your turns, the FCS II system gives you the flexibility to adapt the board to different wave conditions and your own surfing style. It's also ideal if you already own other FCS II-equipped boards, as your existing fins can be swapped straight across.
Who Is It Best For?
The 5'11" Heritage Keel Twin Fish is ideal for:
- Intermediate to advanced surfers
- Shortboard riders looking for a dedicated small-wave board
- Surfers wanting more speed in weaker conditions
- Anyone who loves stylish, flowing surfing
- Riders wanting to experience the unique feel of a twin fin
If you're still learning the basics, you'll likely find a longer board more forgiving before stepping onto a performance fish.
The Circle One Heritage Keel Twin Fish isn't simply a nostalgic throwback. It's a carefully refined board that captures everything surfers love about classic fish designs while incorporating modern shaping and construction.
Fast, responsive and packed with character, it's the kind of surfboard that makes average waves feel exciting again. For surfers who value flow over force and style over brute power, the Heritage Twin Fish delivers an unforgettable ride.
If you're searching for a board that encourages speed, creativity and pure surfing enjoyment, the Circle One 5'11" Heritage Twin Fish is well worth considering. It's proof that some of surfing's oldest ideas still produce some of its biggest smiles.
