CREATE TABLE table_8430 ("Number" TEXT, "Builder" TEXT, "Type" TEXT, "Date" FLOAT, "Length" TEXT, "Capacity" TEXT)

Which Type has a Capacity of 28 passengers, and a Number of 16?
SELECT "Type" FROM table_8430 WHERE "Capacity" = '28 passengers' AND "Number" = '16'
SELECT "Type" FROM "table_8430" WHERE "Capacity" = '28 passengers' AND "Number" = '16'