This U-Boat was a private wreck recovery, and had suffered from the effects of salt exposure, but was certainly worth preserving rather than being lost.
Large "Transport" exhibits in open air display are always going to be at risk, look at the Vulcans in the UK, either in private hands or some of the smaller museums.
Ships are a particular problem, examples are the Cabot as previously mentioned or current battles are:
1. to stop the National Maritime Museum of Scotland "deconstructing" the oldest surviving "Clipper Ship" a rare 1800's England to Australia sailing ship the former SS Adelaide /HMV Carrick.
The world’s oldest surviving clipper ship – and the oldest ship to have carried migrants toAustralia – is mouldering on a Scottish slipway awaiting refurbishment. The City ofAdelaide, built in England for Adelaide owners in 1864, is regarded by some experts asmore important than the Cutty Sark.The 54 metre, 900 tonne timber and iron ship, which survived the loss of its rudder in 1877 southof Kangaroo Island, is remarkably intact, having been consistently owned and reasonably well looked afterright through until 1978. It sank in Glasgow dock in 1991 and stayed underwater for 13 months, but thestygian Glasgow ooze it sank into was no worse a medium for preservation than the sea air that the peelingpaint is now subjected to at Irvine, on the lower reaches of the Clyde.The City of Adelaide is five years older than the Cutty Sark, which sits in splendour in aGreenwich dock in London, and has reported claim to the fastest passage by a clipper from England toAdelaide, of 64 days. That is faster than anything achieved by the Cutty Sark and only a day over the recordset in 1868 by the Thermopylae, under the legendary captain “Bully” Forbes, between Gravesend and Melbourne.
The UK National Lotter, British Government, Australian Federal Government or South Australian (Adelaide) Government have not chosen to protect this heritage registered significant British ship with strong historical links to Australia and Adelaide.
http://en.wikipedia.org/wiki/City_of_Adelaide_(1864)
2. Australia's oldest warship, a rare 1870's Breastplate Monitor Ship, a semi submersible ancestor of the Battle Ship, HMVS Cerberus served with the Colonial Victorian Navy and later with the RAN, and was scuttled close to shore near Melbourne, plans have existed snice the 1990's to recover her for preservation, however in the early 2000's the hull began to give way under the wieght of the deck and gun turrets. A joint Victorian State Government and Federal Australian Government review continues the trend of fiddling while Rome burns.
http://home.vicnet.net.au/~maav/hmvscerberus.htm
3. One that looks like it may now be saved is the world's oldest surviving Douglas Commercial Airliner, DC-2 A30-11, the former Eastern Airlines NC13736 of Eddie Rickenbacker's famed "Great Silver Fleet", it flew with the RAAF during WW2, and was purchased in the 1980's by the Albury Apex Club, restored as PH-AJU "Uiver" and installed on poles at Alubry Airport to commemorate the incident in the 1934 Centenary Air Race when "Uiver" undertook an emergency landing at night in bad weather at Albury by the aid of the townspeoples car head lights.
Taken down from the poles due to corrosion of engine mounts etc, the Albury Council proposed to house it within a new airport terminal, but baulked at spending rate payer funds on restoring it again at a suggested cost of $200k to $400k. A trust was formed to raise the funds, and failed spectacularly, and instead proposed the aircraft be cut up, with the cockpit, engines and centre-section leading edge being used to create a stunning "sculpture" on the wall of the new terminal with painted 2 dimensional graphics completing the "art work".
(Never mind its own historical status, and the fact that it was stil largely intact, and that a DC-3 Cockpit/centre-section could be mocked up to achieve the same result, or indeed a mockup from industrial materials could be built.)
Luckily the Council recently rejected that Trust's proposal and instead has chosen to seek a museum in Australia to take over ownership and restoration of the aircraft elsewhere while a commemorative sculpture is achieved some other way.
http://forum.keypublishing.co.uk/archive/index.php?t-42691.html
Regards
Mark Pilkington