By Paul Donald Plans to raise a ship dubbed the Titanic of the Alps from the depths of a mountain lake have been approved. The shipwreck now lies 210m (689ft) beneath Lake Constance, which borders Germany, Switzerland, and Austria after sinking in 1933 and now Swiss authorities have given the green light to the ambitious scheme. The steamship Säntis has been called the Titanic of the Alps because of how her stern rose out of the water as she sank, with a number of technical similarities between the two ships. But unlike her famous namesake, the Säntis will now, the organisers of the salvage mi…