English composer. He wrote operettas in collaboration with William Gilbert, including HMS Pinafore (1878), The Pirates of Penzance (1879), and The Mikado (1885). Their partnership broke down in 1896. Sullivan also composed serious instrumental, choral, and operatic works for example, the opera Ivanhoe (1890) which he valued more highly than the operettas.
The flag may have been based on that of Schwyz, one of the original cantons of the Confederation. While the national flag is square, a rectangular flag is used on Swiss lakes and rivers. Effective date: 12 December 1889.