A nuclear submarine crashed after tracing paper was used to mark its course, it has emerged. HMS Trafalgar ran aground during a training exercise off the coast of Skye in November 2002. A Royal Navy ...

The tracing paper was put over the chart so they could draw their course on it - but the inquiry found it had obscured vital information. This included symbols showing the strength of the current ...

Technical drawings of architectural or engineering designs always seem to consist of white images and text on blue paper. Why? It’s because of how those documents are made. The blueprinting ...