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_name_30 (tonnage__grt_ INTEGER, time VARCHAR, casualties VARCHAR)
### Question:
What is the sum of tonnage with a time at 00:10 and less than 42 casualties?
### Answer:
SELECT SUM(tonnage__grt_) FROM table_name_30 WHERE time = "00:10" AND casualties < 42