Thailand: Cruising Catamaran Holed on Uncharted Reef

Australian cruising catamaran holed on an uncharted reef in Thailand.

Published 9 years ago, updated 5 years ago

Bob Mott, who runs Charter Catamaran in Thailand has sent us photographs of a cruising catamaran that has been severely holed after a collision with an uncharted reef near Phuket.

Bob reports that the owner, Andre, is a French Canadian aged 76 who is in the hospital with rib/kidney damage after the incident. Sadly, his 68-year-old wife Hazel is dying of cancer and is confined to a wheelchair. Hazel does the navigation and due to her condition, she sleeps up top in the saloon. Andre does all the sailing side.

The boat’s name is Sans Tambour Ni Trompetewhich means Quiet Achieverthe literal translation from French to English is Without Fanfare.

Andre told Bob Mott that they left Anchorage and were calibrating their repaired Coursemaster autopilot, which involved doing circles to orientate the fluxgate. That soaked up around 30 minutes. They were then heading on a line out of the bay towards the Yacht Haven Marina channel on their way to collect friends. They had been underway at around 4-5 knots under outboards for about 1 ½ hour, maybe a bit less before they struck. They were motoring not sailing. Bob says, “We haven’t established the location of the rocks as of yet and at some point, I will catch up with him and try to at least get a general area to warn about.”

Weather at the time of the collision was 12-14 knots straight into the bay, creating a lee shore. It was built from the WNW and quite choppy. Fetch from Phuket Island was a decent distance for it to build up. Bob says, “I would put a general warning out for now for Ao Labu Bay on Koh Yao Yai for unsafe grounds and that Navionics and other chart programs made not match the landscape perfectly and could be some 300m off until a more accurate location can be given.”

Andre and Hazel did temporary repairs with sikaflex and plywood to try to block the holes that were formed by being bounced on the rock/reef. They then motored for nine hours in the bow-down configuration back to Chalong Bay and then upon the hard soon after.

The yard owner “Manop” of CBS Boatyard Chalong Bay dropped another haul in and out commitments especially to accommodate the cat under the circumstances. They first attempted to get it on a cradle with no success so left it to dry out and jacked it onto a trailer at low tide and moved it ashore.

Bob reports a final word from the owner: “He was very impressed with his Bob Oram design that it suffered so much damage and was still afloat and he could still motor her to safety. To be honest, if this had have been a mono it would probably have still be there as the one is still there on Kata Beach. Not getting into the mono against multihull debate but I do feel that would be the case.”

(from an article published by www.cruisingcompass.com)

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  1. March 23, 2019 at 1:16 AM
    Data Entry2 says:

    The use of local cruising guides can help avoid those “uncharted reefs”. Where is this uncharted reef exactly? maybe here on this:

    http://www.asia-marine.net/guide-pnb-east.html
    Navionics, OpenCPn and mMx sea CMD 93 all off in some parts here. Good to have the old MKII eyeball on the water…

  2. March 23, 2019 at 1:11 AM
    Data Entry2 says:

    “I would put a general warning out for now for Ao Labu Bay on Koh Yao Yai for unsafe grounds and that Navionics and other chart programs made not match the landscape perfectly and could be some 300m off until a more accurate location can be given.”

    Yup that’s right..that’s the way it is …and you need to get used to it !!

  3. March 23, 2019 at 1:10 AM
    Data Entry2 says:

    When they say “uncharted”…does it mean it was NOT ON THE CHART, or that the electronic chart showed the reef in an incorrect position?

    My guess is that the “electronic chart” is based on a paper chart that is not WGS84 datum…as are most in the south pacific

    A yachtsman needs to utilize “old fashioned” navigation methods in these areas…and steer well clear of danger areas…..

    blaming the “electronic chart makers” doesn’t really excuse lack of navigation experience.

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