ideas, it was Bouch who first put them into effect, and did so with an attention to detail (such as design of the ferry slip). This led a subsequent President of the Institution of Civil Engineers to settle any dispute over priority of invention with the observation that "there was little merit in a simple conception of this kind, compared with a work practically carried out in all its details, and brought to perfection." The company was persuaded to install this train ferry service for the transportation of goods wagons across the Firth of Forth from Burntisland in Fife to Granton. The ferry itself was built by Thomas Grainger, a partner of the firm Grainger and Miller. The service commenced on 3 February 1850. It was called "The Floating Railway" and intended as a temporary measure until the railway could build a bridge, but this was not opened until 1890, its construction delayed in part by repercussions from the catastrophic failure of Thomas Bouch's Tay Rail Bridge. The largest train ferry ever built is on the Trelleborg-Rostock route, built in 1998, long, wide, with six tracks plus two on an elevator to the lower deck, having a total length of track of . Hazards Train ferries rarely sink because of sea hazards, although they have some weaknesses linked to the very nature of transporting trains "on rail" on a ship. These weaknesses include: Trains are loaded at a rather high level, making the ship top-heavy. (Although modern train ferries often have truck decks above the train deck, making them less top-heavy) The train deck is difficult to compartmentalise, so that sloshing flood water can destabilise the ship. However, train ferries are often built as "large barges", partly with open train deck, with the superstructure above, meaning the water will pour out into the sea again. Car ferries, on the other hand, usually have "normal hulls" with "holes" in them for loading; this design retains sloshing flood water within the ship The sea doors where the trains go in and out are a weakness, even if placed at the rear of the ship. The train carriages need to be strongly secured lest they break away and roll around, particularly on long, open-water routes. (The brakes are normally put on on long open-water routes) The Ann Arbor Railroad of Michigan developed a system of making cars secure that was adopted by many