This boat was exposed to the elements for awhile, not a very long time, but its deck had mildew, algae, and dirt. It did take elbow grease and the right chemicals to get it clean and shiny.
Final 
Final 
Final 
Final
This is common mildew and algae build up on boats left to the elements of periods of 6 months to a year. Mildew removal and algae removal takes a good deck brush and a bleach based cleaner.
Port deck – Before 
After
Starboard deck – Before 
After
Rear – Before 
After
Bow – Before 
After
Deck opening covers – Before 
After 
After
Console – Before 
After
Battery compartment – Before 
After
Before 
After
V-berth – Before 
After
V-berth – Before 
After 
After
Monkey’s fur – Before 
After
Bimini – Before 
After 
After