Servicing Melbourne & the Mornington Peninsula

The Sting: three weeks to the start line.

Structural boat repair on an offshore racing catamaran: carbon fibre skin repair and composite core restoration on a Supercat 600, completed at our Hastings workshop on the Mornington Peninsula in time for Round 3 at Geelong.

Vessel
X-Cat, Supercat 600
Damage
Compression shear, top deck
Repair
Carbon skins & core
Turnaround
3 weeks
The Sting, a yellow X-Cat Supercat 600, racing offshore

01 – The incident

Contact at turn one

Racing at Wyndham Harbour, The Sting made contact with Shifty Cat, another Supercat 600, through turn one. The impact loaded the top deck in compression and sheared the laminate.

The Sting and Shifty Cat making contact through turn one at Wyndham Harbour
Turn one, Wyndham Harbour

02 – The damage

Carbon fibre and core damage, deeper than the surface

Our assessment found both carbon fibre skins fractured, with the composite core beneath damaged along the original shear line. A cosmetic patch would have hidden the problem, not fixed it.

The Sting in the workshop for assessment
Damage to The Sting's top deck
Composite core damage exposed under the carbon skin

3 wks

03 – The deadline

Round 3 at Geelong was three weeks away. The repair had to be structurally sound, properly cured and back to its original profile in that window.

04 – The repair

Repaired properly, not patched over.

  1. Mark out

    The full extent of the damage mapped and the repair area marked beyond the shear line.

    Repair area marked out and masked
  2. Composite core restoration

    Damaged composite core cut out back to sound material and replaced.

    New carbon/composite material being prepared
  3. Carbon fibre skin repair

    Inner and outer carbon fibre skins structurally rebuilt, not just filled.

    Vacuum bagging in progress from inside the hull
  4. Vacuum bagging & post cure

    Consolidated under vacuum, then post-cured under controlled conditions for full strength.

    Second vacuum bag setup from a different angle
  5. Fair to profile

    The deck faired back to its original shape and finish.

    Boat repaired

05 – The result

The Sting made Round 3

Both skins restored, the core replaced and the deck faired back to its original profile, ready to race at Geelong. The same methods go into every structural fibreglass and carbon fibre repair we carry out in Hastings.

The Sting repaired and back on its trailer in the Valentus workshop

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