For writing on wet surfaces we recommend the edding 950 industry painter, a marker with a twist-action wax-like tip. It also writes permanently and reliably on rough, rusty or heavily soiled surfaces with a line width of max. 10 mm, so is ideal for materials such as metal, wood and stone.
For slightly wet surfaces, or for writing with a narrower stroke width, you can also use the edding 8750 industry paint marker.