Give you a statement and table with its title in Markdown format, please determine whether the statement is supported or refuted by, or is unrelated to the table. It'a binary classification problem, you should choose the answer between supported and refuted. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| ship | builder | laid down | launched | commissioned |
| dolfijn | rotterdamse droogdok mij | 30 december 1954 | 20 may 1959 | 16 december 1960 |
| zeehond | rotterdamse droogdok mij | 30 december 1954 | 20 february 1960 | 16 march 1961 |
| potvis - class | potvis - class | potvis - class | potvis - class | potvis - class |
| potvis | wilton - fijenoord , schiedam | 17 september 1962 | 12 january 1965 | 2 november 1965 |
| tonijn | wilton - fijenoord , schiedam | 26 october 1962 | 14 june 1965 1965 | 24 february 1966 |
Title:
dolfijn - class submarine
Statement:
the ship zeehond was built by rotterdamse droogdok mij
Answer:
supported