Mather-Lees teaches a €295-per-day course (roughly R5,000) to help crew members understand the value of the art and how to seek specialist help. In some cases, the art on board is worth several times more than the yachts.
In this astounding interview in the Observer, she says: There are superyachts with "better collections than some national museums."
"Now that the rich are increasingly bringing their art collections on board their yachts it's vital that captains and crew know how to care for these pieces," she told the Observer.
She also tells horror stories: There's the one time unruly children threw corn flakes at a multi-million dollar Jean-Michel Basquiat painting because "they thought it was scary," then the crew made it worse by trying to wiping it off.
She declined to name the owner or identify the artwork, but a Basquiat painting depicting a crazed, skull-shaped face sold at auction for a US record $110.5m (R1.5 billion) in 2017.
Similarly, the insanely wealthy's drink of choice - champagne - can be a real issue with cork damage causing very expensive restorations, in one instance after a multi-million dollar artwork was struck by the projectile.
Mather Lees also outlined how yacht owners had trimmed artworks to make them fit certain walls and how one patron had turned a priceless Mark Rothko work 90 degrees, which may well have turned the artist in his grave.
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