Dredge flotation hose and system

A flotation hose for use in an external environment, the hose comprising:

• a first lay-flat hose having a length, an internal lumen, two sealed end regions, and a closeable orifice in communication between the internal lumen and the external environment;
• and a second lay-flat hose coupled along the length of the first lay-flat hose to the first lay-flat hose.

A system for conveying fluids, the system comprising:

• a flotation hose including a first lay-flat hose having a length, an internal lumen, two sealed end regions, and a closeable orifice in communication between the internal lumen and the external environment, and a second lay-flat hose coupled along the length of the first lay-flat hose to the first lay-flat hose;
• and a hose reel having the first and second lay-flat hoses wound thereabout.

A method for making a flotation hose, the method comprising:

• disposing a second lay-flat hose inside a first lay-flat hose;
• and coupling the first and second lay-flat hoses together at a first end and coupling the first and second lay-flat hoses together at a second end to form a space between the first and second hoses, in which the space can be filled with a gas to form an annular volume between the first and second hoses.

A device for creating a flotation hose from coupling a first lay-flat hose over a second lay-flat hose that has a smaller outside diameter than the first lay-flat hose, the device comprising:

• a body having a first region for coupling to the first hose, a second region for coupling to the second hose, a third region for receiving or discharging a fluid, and a lumen therethrough;
• in which the second region has an outside diameter about equal to the inside diameter of the second hose, in which the first region has an outside region about equal to the inside diameter of the first hose, such that the first hose can be coupled to the first region with a first compression ring and the second hose can be coupled to the second region with a second compression ring.