After hitting an iceberg during its maiden voyage, the Titanic stayed afloat for less than 3 hours. Rivets used in the manufacturing process which were also used for many of the United States’ modern megastructures, were fit using a technique in which the rivet is heated and then hammered through a hole subsequently cooling and contracting, which pulled together the pieces of anything it was attached to. As the rivets of the Titanic popped out after impact, it allowed for a zipper like opening of the ship which conceded water to flush inward. Modern ships do not use rivets for this very reason and instead opt for welded hulls. It is impossible to build a ship which can withstand either an iceberg or a rock edifice with both being found below the surface of the ocean quite frequently. The only resolution is to use Radio Detection and Ranging or Radio Direction And Ranging (RADAR) and a global positioning system to steer clear of these hazards. Modern oil tankers have double hulls which reach right upside the entire ship but modern commercial ships normally do not bring their doubled hulls this high as it is an expensive safety feature which is bypassed as commercial ships do not carry oil which is financially and environmentally costly when spilled, alongside the fact that double hulled ships take up valuable space which could otherwise be used for cargo transportation. Instead commercial and industrial ships invest resources into safety systems better equipped for the needs of the people and/or goods which they transport