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Case Studies

Increased Speed With Propspeed for Grand Banks 32'

  • Propspeed
  • Powerboat

“I’ve run the boat enough over the years to be very familiar with its characteristics; At 1,800 rpm, the boat's speed is a consistent 8 knots. After application, running the engine at the same setting gave an increase in speed of a half-knot — impressive for a boat weighing close to 8 tons!”

Mark Corke, Owner
‘Seaglass’, Grand Banks 32’

Summary

When Mark Corke had his Grand Banks 32' hauled for routine maintenance, he decided to try Propspeed for the first time. After getting back out on the water, Mark saw an increase in speed and decrease in fuel consumption.

Keith Mayes applying Propspeed to Grand Banks

About

When Mark Corke had Seaglass, his Grand Banks 32, out of the water for routine maintenance, he decided to try out Propspeed for the first time. Propspeed’s Northeast sales rep, Keith Mayes, met with Mark to run him through the application process. Mark used a 500ml (16.9 ounce) kit (now known as the Medium Kit), which coated Seaglass’ single 24-inch, four-bladed prop and small hydraulic stern thruster.

After Seaglass was relaunched, Mark was eager to see if Propspeed would improve Seaglass’ speed, as well it’s fuel efficiency. Mark said, “I’ve run the boat enough over the years to be very familiar with its characteristics; at 1,800 rpm, the boat’s speed is a consistent 8 knots. After application, running the engine at the same setting gave an increase in speed of a half-knot – impressive for a boat weighing close to 8 tons!” Mark also noticed decreased vibration due to cleaning off the barnacles and other marine growth.

Seaglass is hauled at the same time each year for maintenance, so Mark was interested to see how Propspeed held up after 12 months in the water. “When I pulled her out of the water for cleaning and application of bottom paint earlier this year, the prop was virtually completely clean of growth – very impressive.”

So, was Propspeed worth it for Seaglass? “There has been a noticeable increase in speed and fuel economy. By my estimates, I’m using about a gallon less in fuel over an 80-mile run, and best of all no fouling of either the prop or stern thruster. I’m also a longtime sailor, so I’m acutely aware that any fouling on the prop has a profound effect on speed when under sail.”

“By my estimates I'm using about a gallon less in fuel over an 80-mile run, and best of all, no fouling of either the prop or stern thruster.”

Mark Corke, Owner
‘Seaglass’, Grand Banks 32’


Propspeed

Foul-release coating for all underwater metals.

Vessel

Powerboat

Location

Northeast, USA

Benefits

  • More speed, less fuel
  • Improved efficiency