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_15 (tonnage__grt_ VARCHAR, name VARCHAR)
### Question:
What is the tonnage of the Eldena?
### Answer:
SELECT tonnage__grt_ FROM table_name_15 WHERE name = "eldena"