CREATE TABLE "american_seafoods_company_fleet" (
  "name" text,
  "length" text,
  "tonnage" real,
  "built_by" text,
  "year" real,
  "engines" text,
  "horsepowers" real,
  "former_names" text
);

Question: Which Built by has a Name of northern jaeger?
SQL: SELECT "built_by" FROM "american_seafoods_company_fleet" WHERE "name"='northern jaeger';

Question: How many Horsepowers have a Year smaller than 1974, and a Tonnage of 4437?
SQL: SELECT SUM("horsepowers") FROM "american_seafoods_company_fleet" WHERE "year"<1974 AND "tonnage"=4437;