Preparing the Mariflex Challenge for the ocean
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Preparing the Mariflex Challenge for the ocean

2026-04-208 min read

Making the Mariflex Challenge sea-ready for an ocean crossing is a serious undertaking. These yachts may have been built for the toughest conditions, but after years of use they require thorough inspection and maintenance.

The Mariflex Challenge: built for the ocean

The Mariflex Challenge was originally designed by David Thomas for the Challenge Business, a British organisation that gave "ordinary people" the opportunity to participate in ocean races. Between 1996 and 2009, these steel yachts sailed around the world multiple times, through the heaviest seas.

The design is robust: a steel hull, a deep keel design for stability, and rigging set up for the forces of the open ocean. The Mariflex Challenge is a vessel from this Challenge series.

What needs to be done?

The preparation involves several phases:

Hull and underwater body

  • Complete inspection of the steel hull for corrosion
  • Renew antifouling
  • Check and replace anodes
  • Inspect propeller shaft and rudder
  • Rigging and sails

  • Complete rig inspection by certified company
  • Check standing and running rigging
  • Assess sail wardrobe and supplement
  • Prepare storm sails
  • Safety equipment

  • Have life raft inspected
  • Test and register EPIRB and PLBs
  • Renew fire extinguishers
  • Assemble medical kit for ocean sailing
  • Install jacklines and safety harnesses
  • Navigation and communication

  • Test and update all electronics
  • Install satellite communications
  • Check AIS transponder
  • Purchase paper charts as backup
  • Comfort and liveability

  • Check water tanks and calculate capacity
  • Check cooking system
  • Improve ventilation for tropical conditions
  • Sun protection and cockpit cover
  • This entire process takes months and is an essential part of the expedition. Founding Crew members are involved in this — you get to know the ship inside out.

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