For now, load cells have been fitted to the bottom of both of Rowdy’s forestays (and so far they have taken a combined load of 2.6 tonnes, compared to the 4 tonnes that Tim thinks would be acceptable) ...

Custom Charleston Spars© heavy-duty Aluminium Mast and Boom. Extra heavy-duty Stainless Steel Standing Rigging with Norseman Fittings and 12mm compacted wire. Twin Forestays and Double Spreaders.