Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_23614702_1 (built_year VARCHAR, tons___lton__ VARCHAR)
### Question:
In how many different years was the warship that weights 1130 tons built?
### Answer:
SELECT COUNT(built_year) FROM table_23614702_1 WHERE tons___lton__ = 1130