dont know about lyme, but wareham is a bit out the way, its a fairly lengthy cruise out to the harbour mouth that does take some time if you adhere to the 10knot limit within the harbour and the 4knot speed limit up the river. However the water ski area within the harbour is not too far from the harbour but it does get very shallow in these areas and it is best if you go with a GPS the first time at least or take someone with you who knows the area, if you dont know it well yourself. I think the mooring/storage fees are substantially cheaper up the river though compared to those within the harbour limit. Hope that is of some help
Oli
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