Question: What is the history behind the vessel Speedrunner IV (SSC4) built after 1997?
SQL: SELECT "History" FROM "2-15384691-1" WHERE "Built" > 1997.0 AND "Name" = 'Speedrunner IV (SSC4)';

Question: What is the most recent year that Queen Nefertiti (Pegasus Two) was built?
SQL: SELECT MAX("Built") FROM "2-15384691-1" WHERE "Name" = 'Queen Nefertiti (Pegasus Two)';

Question: What is the history behind Speedrunner III (SSC3)?
SQL: SELECT "History" FROM "2-15384691-1" WHERE "Name" = 'Speedrunner III (SSC3)';