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Sipre · Surfski

Sipre Ackua 515

Short (5.15m), moderately wide (55cm) entry hull with a racing-style cockpit and Sipre's ergonomic seat. Rounded, forgiving cross-section that Sipre markets as exceptionally stable while still gliding well; the short waterline keeps top speed modest.

Length
5.15 m
Beam
55 cm
Deck
33.5 cm
Lightest
10 kg
Side view unavailable
Top view unavailable
Sipre Ackua 515, studio side-profile product render
studio side-profile product render · kayaksipre.com

Specifications

Length
5.15 m
Beam
55 cm
Deck height
33.5 cm (est.)
Category
Surfski
Usually paddled by
New paddlers
New price
A$2,800

Layup weights

Fiberglass (polyester)17 kg
Carbon vacuum (epoxy)10 kg

On-water profile

Stability
9–10
Dimension estimateLow confidence
Speed
4

Modelled from published beam, length and deck height. Low confidence. Speed is our rating. Both are given at the hull's own design weight.

These ratings are Surfski Index estimates, worked out from published dimensions, traced hull shapes where we have them, and reviews. They are not supplied by the maker or timed on the water. How a ski feels depends on your weight, skill, set-up and the conditions, so use them to shortlist skis and paddle one before you buy. How we rate.

Stability here means how steady the ski feels sitting still on flat water. Where two craft have overlapping ranges, we can't say which is more stable. Downwind handling is a separate thing, covered in the evidence note below.

Evidence note

This band is estimated from published dimensions. Qualitative context includes 1 paddler report and 2 linked sources.

Suits: Flatwater and learning on sea, river or lake; first downwind runs in sheltered-to-moderate conditions.

Paddler weight

The estimated sweet spot is 81–94 kg, with a broader estimated guide of 66–98 kg. This estimate is a guide, not a limit. Seat fit, conditions and paddling style matter. Lighter paddlers can still enjoy a larger hull, especially downwind. A test paddle is the best check.

Estimated from hull dimensions using a formula fitted to makers’ own paddler limits. It does not establish the designer’s intended paddler weight. How this is worked out.

Generations

~2019-present

Current Sipre short entry/beginner surfski, 5.15m x 55cm, ergonomic Sipre bucket seat and racing-style cockpit; offered in multiple layups from fiberglass-polyester to carbon-vacuum epoxy.

Pros and cons

Pros

  • Sipre markets it as exceptionally stable and easy to handle
  • Light in the top layup (~10kg carbon-vacuum)
  • Ergonomic racing seat and multiple construction options

Cons

  • Short 5.15m waterline limits top speed
  • No AU dealer, import/secondary only
  • Thin resale and parts market outside Europe

What paddlers say

Sipre product copy: 'the ACKUA 515 is exceptionally stable, easy to handle, and thrilling to paddle... its sleek lines and racing-style cockpit make it look like a competition boat,' with a stated weight of 10-17kg depending on construction (kayaksipre.com).Reported experience

Where to buy

Sipre ↗

We don't have a dealer listed for Sipre yet. All makers and dealers.

~A$2,800 import/secondary estimate (Deep Research report); no official AU dealer, Sipre sells Portugal-direct/EU. Price varies by layup (fiberglass-polyester up to carbon-vacuum epoxy).

Sources

BetaRatings are estimatesRatings are estimates. How we get the numbers. Prices checked October 2026, may be out of date.