I did make the gantry from a Japanese 1/700 shipbuilding dock with two Revell 1/1200 Titanic hulls under the gantry with overhead cranes over both slipways. One of the hulls was painted white as Olympic on launch day and the less complete Titanic hull was in grey. I did take it to a Theale show to inspire others to have a go but the three kits plus a Pearl Harbor Ford Island panel as the slipway and a Triang Customs Shed as the paint shop cost best part of £80 retail and, as far as I know, no one has been tempted to have a go themselves. It was on the Coastlines website, f you want to have a look....