Only two months ago, just before we ventured to the Aves islands in September, Benno had cleaned the propeller blades. Gosh, time flies and this chore had to be done again. We are expecting Benno's brother Harald with wife Jutta for a visit and we will be off again to show them Bonaire and the Aves islands. I was just down there underwater for a visual check and volunteered to help with the scrubbing, but Benno really has so much more experience doing this. So, if he insists, I'll let him do this job. Such a sacrifice ;-) After eight weeks sitting idle here in the lagoon, a barnacle community had settled onto the blades of the propeller. To scrape them off, you could pump your lungs full of air and quickly dive down, scrape with a putty knife a few barnacles off and then rush up, gulping for air. Or, you could use a diving tank full with compressed air and use the attached regulator for breathing. This should give you plenty of air for one hour before the tank has to be refilled. But, the ultimate tool is the little air compressor running on 12 Volt or like ours, on 120 Volts. It has a 60 ft long hose with a mouth piece regulator attached, similar to the 2 stage diving regulator. This tool gives you a unlimited time of breathing air.