Tawhai launch Tawhai sandwiched in the middle Just a peek of Tawhai Tawhai alongside HMNZS Tawhai was a New Zealand-built composite Castle-class trawler built for the Royal New Zealand Navy during World War II for the intention for use as a minesweeper, later being converted into a fishing trawler. Background[edit] The vessel was ordered after the New Zealand government, facing a requirement for more minesweepers to operate in homeContinue reading “Castle Class – RNZN built, not completed as HMNZS Tawhai, later transferred to UNRRA (1943)”