Drag lift sailboat

Abstract

The invention of a sailboat that uses three ways of creating lift on the hull of a boat so that it rides higher on the water and gives the sailors a fast dry ride.

Description

BACKGROUND OF THE INVENTION

[0001] Sailboats for thousands of years have used a vertical mast to hold sails up to accept the thrust from the wind. The modern high tech boats like those used in America's Cup races still use the vertical masts with a boom to hold the sail in certain positions for tacking and sailing downwind. In any sailboat the amount of square feet in the sail is limited because too much sail will cause the boat to tip over when trying to tack, angling into the wind. They keep extending the height of the sails to get more sail area and this increases the leverage that exacerbates the tipping over problem. Racing boats have heavy lead weights built into the bottom of the keel to counter balance the tipping force of the wind on the sails.

[0002] A good example of pressing this to the limit is the high tech design of the fastest single hull sailboat in the world. It is a needle-nosed ocean racer called V.0.60. It is capable of 36 knots. That's 41.4 miles per hour. It is 64 feet long, just over 17 feet wide and weighs 30,00 pounds. The mast is 85 feet in the air. The keel has a 12,000-pound lead torpedo at the bottom. To help trim the boat against the tilting force of the sails, 13,000 gallons of water can be pumped into three holding tanks in the hull. It requires a crew of 12 sailors to race it flat-out, day and night in the around the world races. Eight of these boats for the races cost $3 million each.

[0003] These are the world's best and the most high tech but they are still using basic boat configurations that have not changed a great deal over hundreds of years. The 12,000 pounds of weight in the keel pulls the boat deep into the water. In rough water, the hull plows through the waves like a bulldozer and the water flows over the deck blasting the crew so that they have to wear full rain gear and face shields. The needle nose on boats makes it harder for them to plane.

[0004] The following sentence is a quote out of a newspaper article describing the crews on the boats that race in the Americas Cup. “Professional sailboat racing is extremely physical. Harnessing a blustering wind with a giant spinnaker on a 10-story tall mast requires a crew of 16 top-flight athletes. It's a game of strength, stamina, agility and timing.”

[0005] Even in non-competing sailboats, sails can require strong sailors to raise and control them.

OBJECTS AND GOALS OF THIS INVENTION

[0006] First Goal: Make a sail boat that will be the fastest sailboat in history. Even faster than a catamaran. It will be a boat that will plane with a minimum of wind speed. The goal is to make a boat that incorporates methods that harness the wind in such a way as to create lift on the boat rather than tilt the boat even to the point of causing it to capsize sometimes. It will require making a sail that produces more power than normal sails as well as have lots of sail exposed to the wind but at lower elevations and with anti tilting features. It must produce more power and at the right places on the boat.

[0007] Second Goal: Make a sailboat that is comfortable to ride in and that you don't have to jump back and forth to one side of the boat to the other when turning to tack in a new direction as present boats do. The goal is to simply turn the boat and enjoy a relatively level smooth turn.

[0008] Third Goal: Make a sailboat that rides so high on the water that it gives a dry ride without being sprayed or drenched with cold salty water.

[0009] Forth Goal: Make a sailboat with sails that are simple to handle. The sails will be easier to be positioned into a wind collecting position and also be easy to be adjusted to a non-collecting position. The goal is to do away with having to raise heavy sails in order to get underway and which require considerable strength and exertion of energy. One won't have to lower and stow a big sail upon returning to the dock.

[0010] Fifth Goal: Make a boat that has sails that are protected from tearing themselves up in harsh winds and from the rough manipulation of them by the crew as they raise them, lower them, and stow them.

SUMMARY

[0011] Applicant's accomplishes each of these 5 goals by the following design features.

[0012] The first goal of making sailboat that will plane with a minimum of wind speed and be faster than any other boat is achieved by incorporating three unique means of creating thrust power and lift on the hull so it does not have to plow through the water but ride high and dry on the water. Sailboats are easy to tip over so the following design features address that problem.

[0013] The primary sail supporting means is mounted on the back of the boat. This feature in combination with having the front of the boat basically wide and square rather than narrow and pointed results in a great leverage advantage. When tacking, the leverage of the sail tilting forward and to the lee side of the boat sets up a line of force pushing to the far front opposite corner of the square boat. In conventional boats, the mast is usually a little front of center and in the middle of the boat from port to starboard and the keel is in the middle of the boat. With a pointed bow and rounded bottom and the sail forward of center, the pivot point for these conventional boats is the worst arrangement.

[0014] Applicant's hull bottom will be basically flat but with a slopped front end and with rounded corners. This gives the best geometric angle from the middle of the sail in a tacking position on the back corner of the boat to the opposite side and opposite front corner of the boat. This angle is established when the up-wind sail is extended out to a tacking position. The distance from the front corner of the boat back to the sail provides leverage back at the sail to counter the tipping force.

[0015] Having the sail support means on the back of the boat leaves the whole deck open for the crew and passengers to enjoy. It also leaves the whole back width of the boat available to mount sails on to create the maximum lifting, pushing force. This is a really big advantage. Each rear corner has the typical conventional mast. It could have conventional mast, boom and sail but the sail shown in the drawings has sail box frame carried by the mast. This leaves the space between these sails available for the rectangular sail box frame that tilts back and forth described in the details.

[0016] When sailing down wind each corner sail can be extended out like a bird so that there is a great expanse of sail exposed to the wind. They will not extend as high as typical racing boats but they will have great lateral exposure.

[0017] Another way to achieve the number one goal of a boat that planes easily is to harness the wind in such a way that a lift is created on the hull. The boat will ride high on the water to minimize drag and increase speed. A wide flat bottom hull will plane quicker than a narrow deep hull because the weight of the boat and passengers is spread over more square feet of water surface. This minimizes the depth that the boat sinks into the water.

[0018] In order to create a lift on the rear of the hull, the sail supporting means on the back of the boat is made so that it will lean back into the wind. Sails are carried on the frame. The frame is preferably a rectangular shape. It can be positioned at varying degrees of angle from leaning forward toward the front of the boat or back into the wind toward the back of the boat and even to lie flat parallel to the deck of the boat. When it is positioned back into the wind for example at a 45-degree angle, the wind strikes the sail at that 45-degree angle and one half of the wind energy flows down toward the deck of the boat and the sail absorbs the other half. It divides 50/50 in each direction at a 45-degree angle. The 50% absorbed by the sail result in an upward lift and forward thrust on the sail box frame. The sail box frame carries the sails. It can carry conventional sails or the sail box frame with the strips of sails that are adjustable. The sail box frame collects and retains the maximum forces of the wind. It is like a box with one side open. The sail box frame is made up of vertical walls on each side and upper and lower horizontal walls so that all four sides of the structure have walls that extend out and back toward the oncoming wind. When the wind enters the open side of the sail box frame and hits the flat surface of the sail it tries to escape to any lower pressure area but the walls trap it. The walls block the wind so it can not spill off to the sides of the sail as happens with conventional sails. In flow tests, the walls send the wind back at the same angle that the walls are fixed. If the walls are fixed at a 45-degree angle, then the wind goes back at a 45-degree angle. If the walls are fixed at a 90-degree angle then the wind exits the sail box frame nearer to a 90-degree angle. This 90-degree angle results in the sail absorbing the maximum energy of the wind. The increased force from this sail configuration can be clearly demonstrated and is surprisingly significant. It requires a special structural configuration in order to support the walls at the 90-degree angle. It is well worth the effort and investment as it contributes greatly to extra pushing power on the boat.

[0019] The Forth Goal of having sails that are simple and easy to handle is achieved by the following design features and structure.

[0020] The sail box frame 44 carries a sail back up sail supporting means like a mesh type material. Its attachment to the frame extends from side to side and top to bottom. It will allow the wind to pass through it but it has enough structure to it to function as a sail back up support means for the sail strips to push against. Another backup support means material is simply strings strung up on the frame like a tennis racquet in at least one direction but preferably in both vertical and horizontal directions.

[0021] The sail itself is made up of a plurality of strips of sail material, tentatively, approximately 10 inches deep by whatever width fits the sail box frame of a particular boat size. These strips of sail material are suspended horizontally across the frame and lie up against the support material or said strings. However the strips of sails could be suspended vertically but preferably horizontally. Each strip covers just it's own area of mesh or strings, one above the other so that the full area of the sail box frame is covered. When the wind blows against these strips of sail, the mesh or strings support them and they seal off the passage of the wind. When the wind blows the other way, the wind pushes the sails away from the mesh and allows the wind to pass through. The strips of sail are suspended by lines attached to arms at the top and bottom of the frame structure. The sail box frame 44 carries the arms and they pivot so the arms rotate on the frame. There are pulleys at the top of the frame that the lines pass over. The lines are attached to the arms. When a sailor standing on the deck pulls on the lines, the arms are rotated up out and away from the frame pulling the strips of sail out away from the strings. They can't touch the back up mesh so they just fly in the wind. This makes for a fast way to set and remove the sails, so to speak. They do not need to be removed when the boat is left in the dock. They will flap in the breeze but they can be made of material tough enough to last a long time. At such time as there is some wear and tear to the point that a strip needs repairing, only that particular strip will need attention.

[0022] The simplicity of this system will make sailing more attractive to people who would like to jump in their boat and make a quick no hassle run. All that one has to do to set the sails is pull down on the lines that will rotate the arms down to lower the sail strips down against the back up mesh. Not having to raise and lower sails will make it easier for the ladies to sail without having to depend on having strong men around. The sail box frame 44 that carries the multiple sail strips is left up in a vertical position when the boat is left at the dock.

[0023] The goal of planing is also achieved by a unique planing keel. Two forms of the keel are shown. The keel comprises two vertical plates attached to a horizontal planing plate at their lower ends. The planing plate would extend from one vertical plate to the other and be connected together to form a corner on each side and be braced with angled cross bracing. One form is with the vertical plates attached directly to the sides of the hull of the boat.

[0024] The other form is with the upper ends of the vertical plates attached to members that connect them to a heavy shaft that goes up through the boat. There are seals between the hull of the boat and the shaft. At the top of the shaft is a gear that cooperates with another gear that has a hand crank on it for rotating the shaft and keel. Other less expensive means of rotating the shaft can be provided.

[0025] The vertical plates act as keels. The lower horizontal plate acts as a planing plate. It is almost parallel to the flat bottom of the boat except that it is angled up a few degrees so that it is inclined thereby producing lift on the boat.

[0026] This planing plate may have a means of adjusting it to change the degree of its angle. Some experiments will determine the optimum upward angel for the projected speed of travel through the water. Forward motion through the water causes a planing lifting effect on the planing plate and thus on the hull of the boat.

[0027] This keel design could be flanged up to the bottom of the hull instead of the side of the hull and not be as wide as the hull.

[0028] This two bladed keel gives the boat extra resistance to tipping because when tacking, the sail is pushing to tilt the boat and the keel is resisting it. There is leverage at work. With two blades on the keel one of the blades is on the far opposite side of the hull. The further the keel is laterally from the sail, the less leverage there is to tilt the boat. Likewise there is also more leverage back at the sail. The leverage is more than if the keel were in the middle of the hull. Also, notice that the keel is as far forward on the hull as is practical. The same principle of leverage applies here too. The keels planing plate is pushing up on the hull, mostly on the front of the boat, so the further it is from the sails on the back of the boat, the less the rear sail can tilt the hull.

[0029] Another feature of the planing plate is that it acts as a dampening means. In rough water, there will be forces that will tend to cause the boat to bob up and down because the boat is riding on the surface of the water. When the planing plate moves up or down it displaces a large volume of water before it can move up or down. Therefore, it will smooth out the ride on rough water.

[0030] The drawings shown in the details show a sail frame across the back of the boat and it is fixed as to any horizontal rotational movement but it does shift forward and aft. There are masts for sails on the rear corners of the boat also.

[0031] When the rear corner sails are not used but only the fixed sail is utilized, the keel that rotates on a shaft will control the direction of the boat independent of direction the bow is pointed toward. By rotating the sail keel, the sailor can position the boat so that the fixed sail is angled at approximately 45 degrees to the wind. Even though the boat will not be aimed in the direction it is moving, the keel will make the boat travel where the sailor wants it to go. Any wind striking the sails at 45-degrees causes the boat to be pushed against the keel which squeezes the boat forward. Therefore, there is a wind-collecting surface available to receive wind when the boat is tacking to the right or to the left. There is no boom that needs to be switched to the opposite side of the boat to collect the wind. The rotating keel controls the position of the sails so that they accept wind either way.

[0032] This keel will replace the lead-weighted keel that racing boats have. They weigh many thousands of pounds and they pull the hulls deep into the water causing a corresponding drag on the boat. The boat plows through the water drenching the crew.

BRIEF DESCRIPTION OF DRAWINGS

[0033] FIG. 1 is a side view of the boat showing the sail supporting means (sail box frame 44) tilted back to a 45-degree angle. It shows the side view of the sail strips suspended from the support lines. They are shown flying horizontally in the wind.

[0034] Also a storage frame 19 is shown in FIG. 5 for storing the coil spring sail 20 when it is not in use. It is shown with the coil spring sail 20 resting on top of it. Also the console 22 holding the reels 24 with the lines 21 going up toward the coil spring sail 20 are shown.

[0035] FIG. 2 shows a coil spring sail flying with the lines 21 going down to the console 22 that holds the reels 24 for the lines 21.

[0036] FIG. 3 shows a side view of the coil spring sail 20 when flying in the wind.

[0037] FIG. 4 shows the wire coil spring that acts as a skeletal frame to hold the coil spring sail open so that it will collect the wind.

[0038] FIG. 5 is a plan view looking down on the storage frame that holds the coil spring sail as shown in FIG. 1.

[0039] FIG. 6 is a front view of the sail box frame 44 with strings strung back and forth from one side to the other like a tennis racquet. A mesh material may be used instead of strings. Either one are the support means for the strips of sail shown in FIG. 1.

[0040] FIG. 7 is plan view looking down on the square boat shape. It shows the masts 34 on the rear corners of the boat. The dotted lines 36 show where the sails can be in their different tacking sailing positions.

[0041] FIG. 9 is a plan view of the boat when it is wider than it is long. The sail box frame 44 is in a vertical position, not angled back. It is the same sail box frame 44 as shown in FIGS. 1 and 7 except that it is wider than it is long. There is no rotation of them to adjust them to the direction of the wind when tacking.

[0042] FIG. 9 shows masts on the rear corners just like in FIG. 7. These can be rotated horizontally to adjust to the wind when tacking.

[0043] FIG. 8 shows a cross section of the sail box frame 44 looking down on the cross section. It shows the walls that cause the wind to trapped and turn around and go backward.

[0044] FIG. 10 is another side view of the hull as shown in FIG. 1 but it shows some members that were not able to be seen in FIG. 1. One of which are the optional sails 54 that are carried forward on the deck of the boat. The keel 38 with the vertical plates 37 and the shaft 53 are shown as if the keel were rotated 90 degrees from its normal sailing position. It is shown in this position only to show how the water flows through it. When sailing it would be rotated back 90 degrees so water would flow through it in the direction the boat is sailing.

[0045] The bottom plate 40 of the keel is shown inclined upward to cause lift on it as it moves through the water. In FIG. 12 an adjustment feature to change the degree of incline of the bottom planing plate is shown.

[0046] FIG. 10a is view of he hull from the rear showing the openness of the keel and how it is it is braced and how it fits on the hull.

DETAILED DESCRIPTION

[0047] In FIG. 1, the side view of the boat that shows a sail box frame 22 that carries the sails. It is tilted back at a 45-degree angle. It is attached to a base 4 by hinges 6. The base 4 is bolted onto the back end of the boat approximately in the back 5 feet of the boat. The preferred shape of the sail box frame 44 is rectangular. This sail box frame 44 can be positioned at varying degrees of angle, from leaning forward toward the front of the boat or back into the wind toward the back of the boat. It can even to lie flat horizontal to the deck of the boat by rotating the gears 8 with the crank 10. However for a more economical production boat, ropes and winches may be used to control the position of the frame.

[0048] A mesh material 14 is installed onto the sail box frame from side to side and from top to bottom or it could be strung up with strings 14 like a tennis racquet. The sails 12 are made up of a plurality of strips of sail material, tentatively, approximately 10 inches deep by whatever width fits the sail box frame of a particular size boat. These sail strips 12 are suspended horizontally across the sail box frame 44. Each sail strips covers just it's own area of mesh or strings, one above the other so that the full area of the frame is covered. The sail strips 12 are suspended by lines 16. The lines 16 are connected to arms 18. The arms 18 are mounted on the sail box frame 44 at the top and bottom of the frame structure. The arms 18 pivot to swing the lines 16 back and forth either away from sail back up means or in close to it. There are pulleys 5 at the top and bottom of the frame for the lines to pass over and which connect to the arms 18. The lines 16 continue on down to the deck for operator to pull on.

[0049] When the wind blows against the sail strips 12, the mesh 14 backs up the sail strips 12 to support them so that they block the wind. When the wind blows the other way, the wind passes through the mesh 14 and pushes the sails 12 away from the mesh 14. When a sailor pulls on one of the lines 16, the arms 18 rotate up out and away from the mesh 14. When they are out and away from the mesh they can't touch the mesh so they just fly in the wind.

[0050] FIG. 1 also shows a console 22 mounted on the deck that holds reels 24 with lines 21 that go up toward the coil spring sail 20 as shown in FIG. 2. The coil spring sail 20 is used to provide lift to the front of the boat. It is released into the wind on a plurality of lines 21 and controlled by the reels 24 on the console 22. Letting the lines out on one end of the sail 20 causes it to move in one direction and visa versa. Letting the lines out that connect to the bottom or the top of the sail 20 causes it to move up or down and or even dump some of the air out of the sail. This sail 20 can contribute to lift on the front of the hull and to the effectiveness of the boats planing ability and the decreased drag on the hull and thereby help achieve a very fast sailing speed especially in down wind racing.

[0051] FIG. 1 also shows a storage structure 19 for storing the coil spring sail 20 when it is not in use. It is shown with the coil spring sail 20 resting on top of it.

[0052] FIG. 2 shows the coil spring sail 20 with the lines 21 going down to the console 22 that holds the reels 24 for the lines 21. In this view, the sail material 23 is shown to be attached to the back one half the coil spring. A mesh material is attached to the front one half of the coil spring.

[0053] FIG. 3 shows a side view of the coil spring sail 20 when flying.

[0054] FIG. 4 shows the wire coil spring 26 by itself. The sail material 23 is wrapped one half of the way around the wire coil spring 26. It gives structure to the sail and it is that which holds the sail open so that it will collect the wind. The ends of the wire coil spring 26 are covered with sail material so that there is a sail surface for the wind to push on thereby causing the sail to be elongated and be filled with wind.

[0055] FIG. 5 is a plan view looking down on the storage frame 19 that holds the sail 20 as shown in FIG. 1.

[0056] FIG. 6 is a front view of the box fail frame 2 with the strings 14 strung back and forth from one side of the frame to the other like a tennis racquet. A string material may be used in place of the mesh 14. They are the support means for the strips of sail 12 shown in FIG. 1. Either the mesh material 14 or the strings 14 may be used to act as back up support for the sails 12. FIG. 7 is plan view looking down on the square boat shape. It shows Masts 34 on the rear corners of the boat. The dotted lines 36 show where the sails may be in their different sailing positions. This would also apply to the sails and masts 34 that are on the rear corners of the boat as shown in FIG. 9. The longer dotted lines shown in FIG. 7 are the ropes 46 that go from the winches 48 out to the end of the sail supporting structures 34. FIG. 8 shows a cross section of the sail with sail box frame 44 looking down on the cross section it. It shows the sail with the sail box frame 44. The walls of the sail box frame 44 prevent the wind from spilling off the sides of the sail 39 and they cause the wind to turn around and actually go backwards.

[0057] FIG. 9 is a plan view of the boat but in an extremely wide version. The sail frame structure 2 shown here in FIG. 9 is the same sail box frame 44 structure shown in FIG. 1 and 10 except that it is wider. It is fixed in that there is no horizontal rotation of it to adjust it to the direction of the wind as when tacking. This wide version is for maximizing the planing efficiency of the boat. In order for a boat to plane, the front of the boat has to be higher than the back of the boat and it requires a certain degree of upward angle. The shorter the distance from the front of the boat to the back of the boat, the shallower the back of the boat will to be submerged. This results in less drag. It also decreases the tipping action of the wind forces on the sail when tacking. Therefore it is an option that fits into the goal of achieving maximum planing capability of a sailboat.

[0058] FIG. 9 also shows masts 34 on each of the rear corner of the deck and they are just like the sails in FIG. 7. A mast and boom that appear to be very conventional carry these sails. There is a difference though in that there are materials and means for forming a wind deflecting wall around the perimeter of the sail that extends out at some degree of angle from the face of the sail and said wall changes the direction of the flow of the wind as it flows off of the sail thereby utilizing more of the force of the wind. The degree of angle that said wall is fixed determines how abrupt the change in wind direction is and that determines how much wind force the sail retains and utilizes; a 90 degree angle wall utilizes more wind force than a lesser degree of angle. They can have the sail box frame 44 with mesh back up support 14 and the sail strips 12. In FIG. 7 the dotted lines show some sailing positions that these sails may in and they also apply to the masts and sails shown in FIG. 9 that are on the rear corners of the boat. FIGS. 1, 7, 9 and 10 show a short frame 42 across the bow of the boat. It carries a translucent sail material that has two functions. First, it shields the deck and passengers from wind and water spray. Secondly, it collects wind to help push the boat. It can have the same retractable sail strips 12 as shown in FIG. 1. It does not rotate at all. This sail on the short frame 42 works together with the fixed sail on the back of the boat to push the boat. FIG. 9 shows sail box frame 44 in a plan view with the frame rotated up to a vertical position as it would be when the boat is moored at its dock.

[0059] FIG. 10 is a side view of the boat in FIG. 9 but the frame is tilted back into the wind at 45 degrees. The keel 38 is shown as if the keel were rotated 90 degrees. It is shown in this position only to show how the water flows through it. FIG. 1 shows this planing keel 40 in the position that it would be in when sailing. The bottom of the planing keel 40 is the sheet material 40 and it is inclined upwardly to cause lift on the hull as it moves through the water. The location of the planing keel 40 is important to minimize the tipping forces of the sails. Notice that the keel is located as far forward as is practical. The sheet material 40 pushes up on the hull and the further its pushing force is from the sails on the rear of the boat, the more leverage is applied back at those sails.

[0060] FIG. 10 also shows the console 22 for the reels 24 that carry the lines 21 that extend up to the sail 20. The lines 21 are only partially shown.

[0061] In FIGS. 7 and 9 the sail box frame 44 is a fixed sail across the back end of the boat. FIG. 9 also shows two more sails 54 that are fixed. They are mounted on the deck up closer to the bow of the boat. When a sailor is not racing and he has no sails raised up on the rear corner masts, and he wants to use only the fixed sails, he can still tack the boat into the wind by rotating the keel to position the sail box frame 44 and sails 3, 42, 54 at a 45-degree angle to the oncoming wind. The wind that strikes the sails on the 45-degree angle causes the boat to be pushed forward and sideways and the keel forces the boat forward. Therefore, there is a wind-collecting surface to receive wind all across the boat. When the sailor rotates the shaft 53 and keel 38 to turn the boat and tack from the other side, he adjusts the position of the boat to the 45 degree angle of the wind and the fixed sails collects wind from that side. It doesn't matter whether tacking from the left or the right. With the fixed sails 3 and 56 no boom needs to be switched to the opposite side of the boat to properly collect the wind, only rotating the keel makes it happen. The shaft 53 that carries the keel 38 also carries a gear 50 at its top end. A cooperating gear 51 with a crank gives the sailor the power and the control of the shaft in order to rotate the keel 38 to the desired positions.

[0062] To produce a more economical boat, the planing plate keel design can be made to attach directly to the hull 57 of the boat and no rotating shaft would be included. The vertical keels 37 would be bolted directly onto the side of the hull 57. The planing plate 40 would extend from one vertical keel 37 to the other and be connected together and with cross bracing. In this case the planing plate 40 would be as wide as the boat.

Claims

1. A sailboat with its sail supporting means attached to it within the rear one forth of the length of the boat and the deck of the boat is clear of any sail supporting masts forward of said sail supporting means.

2. The sailboat of claim 1 wherein there are sail supporting means attached to each of the rear corners of the boat.

3. The sailboat of claim 2 whereby, a sail supporting means is attached to the boat in the space between said sail supporting means that are mounted on the rear corners of the boat.

4. The sailboat of claim 1 whereby, said sail supporting means includes a frame that carries sails within its perimeter.

5. A sailboat of claim 4 wherein said sail supporting means includes a base which is attached to the boat, a hinge is attached to the base and to said frame, thereby making an interconnection between said base and said frame so that said frame can be inclined backward or forward.

6. A sailboat with a sail supporting means attached to it that includes:

(a) a frame that carries sail back up support means that have open spaces so that wind may pass through them,

(b) arms are carried on said frame, some arms are carried near the top of the frame and some arms are carried near the bottom of the frame,

(c) lines are carried by said arms and said lines extend from said arms that are near the top of the frame down to arms near the bottom of the frame, across from one side of said frame to the other side of said frame, one strip above another,

(d) said arms have means for pulling said strips of sails away from said sail back up support means to allow the wind to pass by said sails and then moving said sails back close to said sail back up support means so that the wind can push them up against said sail back up support means to effectively block wind.

7. A sailboat with sail supporting means attached to the boat which carries sails and wind deflecting means that extend out beyond the edges of the sails at an angle so that they change the direction of the flow of the wind as it escapes off of the surface of the sail thereby increasing the pressure on the surface of the sail.

8. A sailboat or claim 7 wherein said sail supporting means includes a frame that carries sails within its perimeter and attached to said frame are wind deflecting means extending out from said frame at an angle so that they change the direction of the flow of the wind as it escapes off of the surface of the sail.

9. A sail for pulling a boat comprising:

(a) a coil spring frame,

(b) sail material attached to the approximate back half of the sail spring frame from one end to the opposite end thereby providing sail material for the wind to push on all along the back half of the coil spring frame and the sail material extends to wrap around the ends of said coil spring frame to close the ends with the sail material, thereby providing sail material for the wind to push on at each end and cause the coil spring frame to elongate to its full sailing length,

(c) a plurality of control lines are attached to said coil spring frame and extend to a plurality of reels,

(d) said reels are adapted to be attached to said boat, whereby said reals and lines can be adjusted by a sailor to control the position of said coil spring sail when it is deployed into the wind.

10. A sailboat that carries a keel with two vertical plates spaced apart, another plate which is a planing plate is connected transversely to said plates near their lower ends and it is positioned approximately parallel to the bottom of the boat except that its full length is inclined upwardly so that its front leading edge is closer to the bottom of the boat than its trailing edge is to the bottom of the boat.

11. The sailboat of claim 10 whereby said plate has adjustment means to change its degree of upward angle.

12. The sailboat of claim 10 that includes the means to rotate said keel by including:

(a) a shaft extends above the deck of the boat and down through the hull and out through the bottom of the boat,

(b) on the deck of the boat, said shaft engages means for controlling the rotation of said shaft,

(c) sealing means are carried by the boat that seal between said shaft and the boat to prevent water from entering the boat,

(d) said shaft that extends down through the bottom of the boat is attached to the members that support the upper ends of said vertical plates that are connected to said planing plate.

13. The sailboat of claim 12 whereby said means for controlling the rotation of said shaft includes a toothed gear attached to said shaft and another gear connected to said boat that engages said gear on said shaft, means for rotating said gear that is attached to said boat, thereby causing said gear on said shaft to be rotated.

13. A sailboat of claim 5 wherein said base carries a gear and said frame carries a gear that engages the gear on said base and means for rotating the gear on said base to cause rotation of the gear on said frame and thereby cause said frame to be inclined backward or forward.

14. A sailboat of claim 12 that has one or more sails that are fixed to the deck of the boat so that they can not rotate horizontally.