CREATE TABLE table_37545 ("Name" CLOB, "Length" CLOB, "Tonnage" FLOAT, "Built by" CLOB, "Year" FLOAT, "Engines" CLOB, "Horsepowers" FLOAT, "Former Names" CLOB)

Which Built by has a Name of northern jaeger?
SELECT "Built by" FROM table_37545 WHERE "Name" = 'northern jaeger'
SELECT "Built by" FROM "table_37545" WHERE "Name" = 'northern jaeger'