I am covered with LV.
Had to ditch one of my kites at sea last year and swim in. Kite was lost. I was able to claim it on my insurance and have received payment.
I still needed to report the kite as lost to the police to get a crime number but that I had already done as well as the coast guard.
Initially they said they couldn't cover it, but after a review they got back to me and said that they would.
£100 excess to pay but as it was my big flysurfer I got a payout of £2100. Note items over £1500 need to be named items.
TMW