The "New World Symphony" is Symphony No.9 in E Minor ('From the New World') by Antonín Dvořák. The Czech composer was inspired by a visit to the United States in 1893.
The symphony was to become Dvořák's most popular work. In Britain it is particularly associated with the 1973 Hovis bread advertisement, the most popular British ad of all time.
A Nissen hut was a prefabricated corrugated steel structure used extensively as temporary accommodation for soldiers and airmen during WWII.
The hut was designed and patented in 1916 by Major Peter Norman Nissen.
Flotsam is floating wreckage, or 'debris from the ocean'. The word is associated with jetsam, but the two words have distinct meanings in maritime law. Jetsam is floating cargo or goods deliberately thrown into the sea from ships. Flotsam is floating materials from a shipwreck.
Flotsam and jetsam that had washed ashore were often salvaged by beachcombers. The rugged Cornish coast, famous for its shipwrecks, offered many surprises for the careful seeker.