# US 2014/0196655 A1 · Displacement hull form not subject to the limitation of hull speed

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- Number: US 2014/0196655 A1
- Document ID: US20140196655A1
- Status: Published application
- Kind: A1
- Application number: 13/742,278
- Filed: 2013-01-15
- Published: 2014-07-17
- Earliest claimed: 2013-01-15
- Inventors: ROBERT CARL JANSEN
- Web page: https://patentgrep.com/patent/US20140196655A1

## CPC

- B63B 1/042: {the underpart of which being partly provided with channels or the like, e.g. catamaran shaped}
- B63B 1/063: {Bulbous bows}
- B63B 1/08: Shape of aft part
- B63B 1/40: by diminishing wave resistance
- B63H 5/14: characterised by being mounted in non-rotating ducts or rings, e.g. adjustable for steering purpose (shrouding ring attached to blades B63H1/16; jet propulsion B63H11/00)
- B63H 5/16: characterised by being mounted in recesses; with stationary water-guiding elements; Means to prevent fouling of the propeller, e.g. guards, cages or screens
- B63B 1/04: with single hull
- B63H 1/16: having a shrouding ring attached to blades
- B63H 2005/103: {of co-rotative type, i.e. rotating in the same direction, e.g. twin propellers}
- B63H 2025/465: {Jets or thrusters substantially used for steering or dynamic anchoring only, with means for retracting, or otherwise moving to a rest position outside the water flow around the hull}
- 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)
- B63H: MARINE PROPULSION OR STEERING (propulsion of air-cushion vehicles B60V1/14; specially adapted for submarines, other than nuclear propulsion, B63G; specially adapted for torpedoes F42B19/00)
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A displace hull with a shape that is both laterally symmetric and fore-to-aft symmetric is disclosed. The hull includes a pair of channels that help to manage a flow of water around the hull. The hull also includes sponsons and propellers that are located amidships on the port and starboard sides.

## Claims

### Claim 1

A displacement hull for a water craft, the hull comprising a shape that is laterally symmetric and fore-to-aft symmetric, the hull further comprising;
a starboard channel and a port channel, the channels configured to at least partially manage a flow of water around the hull;
a starboard sponson disposed amidships, the starboard sponson configured to form a starboard tunnel with the starboard channel, the starboard sponson further configured to form a starboard flume with the hull;
a port sponson disposed amidships, the port sponson configured to form a port tunnel with the port channel, the port sponson further configured to form a port flume with the hull;
a starboard propeller disposed in the starboard tunnel; and
a port propeller disposed in the port tunnel.

### Claim 2

The hull of claim wherein:
the starboard tunnel comprises an open top connecting the starboard tunnel to the starboard flume; and
the port tunnel comprises an open top connecting the port tunnel to the port flume.

### Claim 3 (depends on 1)

The hull of claim 1, further comprising:
at least one of a bow extension and a stern extension.

### Claim 4 (depends on 3)

The hull of claim 3, further comprising;
at least one thruster disposed in the at least one of a bow extension and a stern extension.

### Claim 5 (depends on 1)

The hull of claim 1, further comprising:
an emergency rudder.

### Claim 6 (depends on 1)

The hull of claim 1, wherein:
the starboard propeller comprises a variable pitch propeller; and
the port propeller comprises a variable pitch propeller.

### Claim 7 (depends on 1)

The hull of claim 1, wherein:
the starboard propeller comprises a pair of counter-rotating, variable pitch propellers; and
the port propeller comprises a pair of counter-rotating, variable pitch propellers.