Death Star
The Death Star is a type of fictional mobile space station and galactic superweapon featured in the "Star Wars" space opera franchise. The first Death Star is stated to be more than 100 km to 160 km in diameter, depending on source. It is crewed by an estimated 1.7 million military personnel and 400,000 droids. The second Death Star is significantly larger, between 160 km to 900 km in diameter depending on source, and technologically more powerful than its predecessor. Both versions of these moon-sized fortresses are designed for massive power-projection capabilities, capable of destroying multiple naval fleets or entire planets with one blast from their superlasers.
Changes in safety practices after the sinking of the RMS Titanic
Alexander Carlisle, Harland and Wolff's general manager and chairman of the managing directors, suggested that "Titanic" use a new, larger type of davit which could give the ship the potential to carry 48 lifeboats; this would have provided enough seats for everyone on board. However, the White Star Line decreed that only 20 lifeboats would be carried, which could accommodate about 38% of those on board when the ship was filled to capacity. At the time, the Board of Trade's regulations stated that British vessels over 10,000 tons must carry 16 lifeboats with a capacity of , plus enough capacity in rafts and floats for 75% (or 50% in case of a vessel with watertight bulkheads) of that in the lifeboats. Therefore, the White Star Line actually provided more lifeboat accommodation than was legally required. The regulations made no extra provision for larger ships because they had not been changed since 1894, when the largest passenger ship under consideration was only 13,000 tons, and because of the expected difficulty in getting away more than 16 boats in any emergency.