In 1975, the first practical solar boat was constructed in England. By 1995, passenger boats incorporating PV panels began appearing and are now used extensively. In 1996, Kenichi Horie made the first solar powered crossing of the Pacific Ocean, and the sun21 catamaran made the first solar powered crossing of the Atlantic Ocean in the winter of 2006–2007. There were plans to circumnavigate the globe in 2010.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What was the name of the first solar powered boat that crossed the Atlantic ocean?
Ah, so.. the sun21 catamaran

Other Christian denominations on the island include: Roman Catholic (since 1852), Salvation Army (since 1884), Baptist (since 1845) and, in more recent times, Seventh-day Adventist (since 1949), New Apostolic and Jehovah's Witnesses (of which one in 35 residents is a member, the highest ratio of any country). The Catholics are pastorally served by the Mission sui iuris of Saint Helena, Ascension and Tristan da Cunha, whose office of ecclesiastical superior is vested in the Apostolic Prefecture of the Falkland Islands.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): When did Roman Catholics start to appear on the island?
Ah, so.. 1852

Starting in the coal mines, by the mid-19th century elevators were operated with steam power and were used for moving goods in bulk in mines and factories. These steam driven devices were soon being applied to a diverse set of purposes - in 1823, two architects working in London, Burton and Hormer, built and operated a novel tourist attraction, which they called the "ascending room". It elevated paying customers to a considerable height in the center of London, allowing them a magnificent panoramic view of downtown.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Who built the "ascending room", in 1823?
Ah, so..
Burton and Hormer