Maid of the Forth makes up to three trips to Inchcolm a day in the summer season, depending on tides. The trip takes three hours altogether. You pass under the Forth Rail bridge, see the islands in the Firth, and land on Inchcolm, an atmospheric island with a ruined Augustinian abbey and lots of sea-birds.
The ruins include some important rooms which survive nearly intact: an octagonal chapter house; a refectory with reading alcove (great acoustics in both); and the dormitory and calefactory.
www.dpro.co.uk/maid/index.shtml
www.cyberscotia.com/inchcolm/
There is also a new boat service called Forth Tours, which started in summer 2006. We took a lovely cruise in August and saw seals and puffins.
The comment about the Forth Tours is not actually true, although this is a new business to the river Forth, the boat is in fact around 40 years old, at least according to the captain when I visited in September last year. Send your feedback or queries to been.there@guardian.co.uk
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www.maidoftheforth.co.uk