So one issue is varnished floors are very slippery - vastly increasing chances of a fall and injury when underway. The higher the gloss, the greater the risk of slipping. I use Djeks
oil once or twice a year. It
seals the floor and helps keep a nice looking sheen, without being slippery.
Also, to clean
teak plywood, try scrubbing down with any household detergent and abrasive sponge, then wipe/scrub down with acetone or plain old mineral,spirits. The idea is to
lift off the dirt and assorted
boat oils, e.g. Clean the surface, without reducing the all to thin
teak laminate on the surface.