Yes, certain waterways can promote more growth. Waterways with fast moving current provide more nutrients to barnacles while areas with more exposure to the sun lead to more algae growth on waterline! If you move your boat to a new Marina you may notice changes on how long it takes the growth to appear! The picture below shows a boat hull in a high current and warm water Marina, this is 2 months after fresh bottom paint.
Prop speed makes metal surfaces slick lick like a sea snails shell. Prop speed is recommended to be applied on all metals underwater as it is self cleaning which will save you money on monthly cleaning costs! The photo below shows the differences in effectiveness with the prop having prop speed and the rudder having conventional bottom paint.
A monthly cleaning is more than a cleaning, it's preventive maintenance. Our divers are trained to inspect your hull with each cleaning and report any issues that you might not be aware of. Common findings are damage to the hull or running gear, blocked thru-holes due to debris in the water or zincs that have lost there effectiveness.
With the aggressive marine enviroment of Florida it is recommended that smaller boats (up to 82 ft.) use Interlux Micron 66 and larger boats (over 82 ft.) use Interlux Micron 99. Both of these Co-polymer based paints with Biolux SPC help keep algae and hard growth off your boats hull and waterline. Which will save on cleaning costs.
The age or type of bottom paint, vessel length and what's growing down there are all factors that affect pricing. What’s growing down there depends on water temperature, salinity, the density of local underwater flora and fauna, the substrate (what your hull is made of) and how often you use your boat. The location of where your boat is in a Marina or Private Dock can cause unusual growth due to high current, proximity to a leaky septic tank or fertilizer runoff caused by a heavy rain. A professional hull diver will tell you, no cleaning to the same boat is ever the same. A diver will determine what his time is worth and price accordingly. If you are interested in a free cleaning, running aground at your local sandbar is an option.
Zincs should be replaced when there is 40% section remaining. This is why it is important to have a diver check the amount of section remaining with each monthly cleaning.
Zincs all corrode at different rates based on there mass. Current and water salinity can affect their rate of corrosion. Adding more zincs will not make them last longer; it simply improves their effectiveness by adding more surface area.
Zincs protect your running from galvanic corrosion. Galvanic corrosion occurs from dissimilar Alloys being in an electrolyte such as seawater. Zincs are a type of Anode, other types of Anodes include Aluminum and Magnesium. You might ask yourself which type of Anode should i be using on my boat! Zinc and Aluminum Anodes are used in saltwater while Magnesium Anodes are best suited for freshwater. We recommend Performance Metal Anodes.