That being one of my local destinations (2hrs flying north of course) you can only get to those boats at low tide. You need to walk out there as the tide is going out, then you have about 15mins before the tide starts turning and you have to high tail it back to higher ground. It is a looooong walk. The hovercraft people normally stop out there on the way to or from the dinosaur prints.
The museum is also great with many artifacts and engines. The hovercraft people have also recovered some engines too.