Watercraft with closed loop cooling

Abstract

A watercraft comprising a hull, a first attachment coupled to an exterior surface of the hull, a second attachment coupled to the exterior surface of the hull, and a closed-loop cooling system. The closed-loop cooling system includes a pump, a first channel at least partially formed by the first attachment, a second channel at least partially formed by the second attachment, the second channel in fluid communication with the first channel, and a coolant circulated through the first channel and the second channel by the pump.

1 . A watercraft comprising:
 a hull;   a first spray strip coupled to an exterior surface of the hull;   a second spray strip coupled to the exterior surface of the hull; and   a closed-loop cooling system including:
 a pump, 
 a first channel at least partially formed by the first spray strip, 
 a second channel at least partially formed by the second spray strip, the second channel in fluid communication with the first channel, and 
 a coolant circulated through the first channel and the second channel by the pump. 
   
     
     
         2 . The watercraft of  claim 1 , wherein the hull includes a keel, and the first spray strip is positioned to one side of the keel and the second spray strip is positioned to another side of the keel. 
     
     
         3 . The watercraft of  claim 1 , wherein the hull defines a bow-stern length, and the first spray strip extends at least 50% of the bow-stern length. 
     
     
         4 . The watercraft of  claim 3 , wherein the first spray strip extends at least 75% of the bow-stern length. 
     
     
         5 . The watercraft of  claim 1 , wherein the closed-loop cooling system further includes a connection line extending between the first channel and the second channel. 
     
     
         6 . The watercraft of  claim 1 , wherein the closed-loop cooling system further includes a first plurality of protrusions extending into the first channel and a second plurality of protrusions extending into the second channel. 
     
     
         7 . The watercraft of  claim 6 , wherein the first plurality of protrusions extends from the hull and the second plurality of protrusions extend from the hull. 
     
     
         8 . The watercraft of  claim 1 , wherein an inlet aperture is formed in the hull at a first end of the first spray strip and an outlet aperture is formed in the hull at a second end of the first spray strip. 
     
     
         9 . The watercraft of  claim 1 , further including a skeg coupled to the exterior surface of the hull, and wherein the closed-loop cooling system further includes a skeg channel at least partially formed by the skeg; and wherein the coolant is circulated through the first channel, the second channel, and the skeg channel by the pump. 
     
     
         10 . The watercraft of  claim 9 , wherein the closed-loop cooling system further includes a radiator coupled to the hull, and wherein the coolant is circulated through the first channel, the second channel, the skeg channel, and the radiator by the pump. 
     
     
         11 . The watercraft of  claim 1 , further including an electric drive and a battery electrically coupled to the electric drive; wherein the closed-loop cooling system is configured to cool the electric drive, the battery, or a combination thereof. 
     
     
         12 . The watercraft of  claim 1 , wherein the coolant includes ethylene glycol and deionized water. 
     
     
         13 . A watercraft comprising:
 a hull;   a skeg coupled to an exterior surface of the hull; and   a closed-loop cooling system including:
 a pump, 
   
       a first channel at least partially formed by the skeg, and
 a coolant circulated through the first channel by the pump. 
 
     
     
         14 . The watercraft of  claim 13 , wherein the first channel extends between an inlet formed in the skeg and an outlet formed in the skeg. 
     
     
         15 . The watercraft of  claim 14 , wherein the first channel is serpentine. 
     
     
         16 . The watercraft of  claim 14 , further including a plurality of parallel channels extending between an upstream portion of the first channel and a downstream portion of the first channel. 
     
     
         17 . The watercraft of  claim 13 , further including a spray strip coupled to an exterior surface of the hull, and wherein the closed-loop cooling system further includes a second channel at least partially formed by the spray strip; wherein the coolant is circulated through the first channel and the second channel by the pump. 
     
     
         18 . The watercraft of  claim 17 , wherein the closed-loop cooling system further includes a radiator including a shell coupled to the bull; and wherein the coolant is circulated through the first channel, the second channel, and the radiator by the pump. 
     
     
         19 . The watercraft of  claim 13 , further including an electric drive and a battery electrically coupled to the electric drive; wherein the closed-loop cooling system is configured to cool the electric drive, the battery, or a combination thereof. 
     
     
         20 . The watercraft of  claim 13 , wherein the coolant includes ethylene glycol and deionized water. 
     
     
         21 .- 49 . (canceled)