Hard hitting and believable. The scenes on the fishing boat were very suspenseful thanks to the skipper who kept throwing his crew on a one way trip overboard.
An extremely well produced documentary proof of which is that it is still involving as a watch in the 2020s even though the events happened decades ago.
From a sociological aspect, the documentary has little value. If you are prepared to see this one through there is some satisfaction in seeing the irritating characters get led around the mulberry bush.
It is above average for its type. The screenplay and characters are low key and the period production details look to be right but the clincher is the excellent performance of Jenny Seagrove.