# US 2011/0297069 A1 · Boat hull strake design

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- Number: US 2011/0297069 A1
- Document ID: US20110297069A1
- Status: Published application
- Kind: A1
- Application number: 12/802,372
- Filed: 2010-06-07
- Published: 2011-12-08
- Earliest claimed: 2010-06-07
- Inventors: John I. Quimby
- Web page: https://patentgrep.com/patent/US20110297069A1

## CPC

- B63B 1/38: using air bubbles or air layers {gas filled volumes (waterborne vessels travelling on air cushions B60V3/06)}
- Y02T 70/10: Measures concerning design or construction of watercraft hulls
- B63B: SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING (arrangements of vessel ventilation, heating, cooling, or air-conditioning B63J2/00; floating substructures as supports of dredgers or soil-shifting machines E02F9/06)
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A system for increasing the buoyancy of a boat operating in the water and to reduce the wetted-surface-friction of the water against the hull of the boat. The system includes a multiple of strakes attached to the bottom side of the boat. The strakes are instrumental in creating a multitude of bubbles on which the hull of the boat will ride which increases the efficiency of the power of the motor or motors powering the boat. The strakes are arranged in series along the hull of the boat and can increase in size from the bow of the boat to the stern. The strakes are also increasing in depth from the bow of the boat to the stern. The strakes may be attached to the boat as a retro-fit or may be added when manufacturing the boat.

## Claims

### Claim 1

A system to increase the buoyancy of a boat, said system includes a series of longitudinal strakes attached to a hull of said boat, said strakes being slanted and canted relative to said hull of said boat to thereby create bubbles as said boat moves through the water, said bubbles create said buoyancy and reduce friction of the water against said hull of said boat.

### Claim 2 (depends on 1)

The system of claim 1, wherein there is a multiple of said series,

### Claim 3 (depends on 1)

The system of claim 1, wherein there are at least three series of said stakes on each side of said hull.

### Claim 4 (depends on 1)

The system of claim 1, wherein said stakes in said series increase in width from a bow to a stern of said hull.

### Claim 5 (depends on 1)

The system of claim 1, wherein said stakes in said series increase in depth from a bow to a stern of said hull.

### Claim 6 (depends on 3)

The system of claim 3, wherein said series of said strakes diminish in size from the keel of said hull and up the chimes of said hull.

### Claim 7 (depends on 1)

The system of claim 1, wherein a series of steps are incorporated into said strakes.