Marine Modelling International Magazine
Hi Neil. Sarik Hobbies sell the plan and article so I must have had it at some point but can't for the life of me find it. You could try calling Sarik and asking if they would just supply the article..
https://www.sarikhobbies.com/product/byms-minesweeper-2/
https://www.sarikhobbies.com/product/byms-minesweeper-2/
If it don't fit, use a hammer to make it fit....