Disclosed is an anchor having a fluke, a shank that is connected to the fluke, and a coupling to attach the fluke to an anchor line or anchor chain, wherein the shank has two shank legs each having a straight shank plate with an outer surface that extend on the opposite sides of the plane of symmetry of the anchor and that diverge from the coupling towards the fluke, wherein the fluke has two straight penetration plates with a top surface on the opposite sides of the plane of symmetry of the anchor, wherein the orientation of the outer surfaces with respect to the top surfaces is specified by three angles under narrow ranges to provide excellent penetration properties and an excellent holding capacity.

An anchor system for watercraft includes: a hub including a receiving contour; a skirt removably securable to the hub along a receiving contour of the hub, wherein: the skirt at least partially surrounds an inner recess and includes a gap such that such that the skirt is not circumferentially continuous; and the skirt is configurable in an open position and a closed position, wherein when the skirt is in the open position the gap is wider than when the skirt is in the closed position. The inner recess of the skirt has a radius that is larger than a complementary radius of the receiving contour of the hub when the skirt is in the open position. When in the closed position, the radiuses are substantially the same, such that the skirt is secured to the hub when the skirt is in the closed position.

An anchor system for watercraft includes: a hub including a receiving contour; a skirt removably securable to the hub along a receiving contour of the hub, wherein: the skirt at least partially surrounds an inner recess and includes a gap such that such that the skirt is not circumferentially continuous; and the skirt is configurable in an open position and a closed position, wherein when the skirt is in the open position the gap is wider than when the skirt is in the closed position. The inner recess of the skirt has a radius that is larger than a complementary radius of the receiving contour of the hub when the skirt is in the open position. When in the closed position, the radiuses are substantially the same, such that the skirt is secured to the hub when the skirt is in the closed position.

An anchor system for watercraft includes: a hub including a receiving contour; a skirt removably securable to the hub along a receiving contour of the hub, wherein: the skirt at least partially surrounds an inner recess and includes a gap such that such that the skirt is not circumferentially continuous; and the skirt is configurable in an open position and a closed position, wherein when the skirt is in the open position the gap is wider than when the skirt is in the closed position. The inner recess of the skirt has a radius that is larger than a complementary radius of the receiving contour of the hub when the skirt is in the open position. When in the closed position, the radiuses are substantially the same, such that the skirt is secured to the hub when the skirt is in the closed position.

An anchor system for watercraft includes: a hub including a receiving contour; a skirt removably securable to the hub along a receiving contour of the hub, wherein: the skirt at least partially surrounds an inner recess and includes a gap such that such that the skirt is not circumferentially continuous; and the skirt is configurable in an open position and a closed position, wherein when the skirt is in the open position the gap is wider than when the skirt is in the closed position. The inner recess of the skirt has a radius that is larger than a complementary radius of the receiving contour of the hub when the skirt is in the open position. When in the closed position, the radiuses are substantially the same, such that the skirt is secured to the hub when the skirt is in the closed position.

Disclosed is an anchor having a fluke, a shank that is connected to the fluke, and a coupling to attach the fluke to an anchor line or anchor chain, wherein the shank has two shank legs each having a straight shank plate with an outer surface that extend on the opposite sides of the plane of symmetry of the anchor and that diverge from the coupling towards the fluke, wherein the fluke has two straight penetration plates with a top surface on the opposite sides of the plane of symmetry of the anchor, wherein the orientation of the outer surfaces with respect to the top surfaces is specified by three angles under narrow ranges to provide excellent penetration properties and an excellent holding capacity.

An anchor has a fluke, a shank that is connected to the fluke, a coupling to attach the fluke to an anchor line or anchor chain, and an angle adjustment provision to adjust the angle between the shank and the fluke, wherein the angle adjustment provision is a hinge between the fluke and the shank, a first positioning member connected to the shank that is provided with a series of first positioning holes at a first intermediate distance and a second positioning member connected to the fluke that is provided with a series of second positioning holes at a second intermediate distance and spaced apart from the hinge axis, and a positioning pin that is inserted in one of the aligned first and second positioning holes, wherein the second intermediate distance differs from the first intermediate distance.

An anchor has a fluke, a shank that is connected to the fluke, a coupling to attach the fluke to an anchor line or anchor chain, and an angle adjustment provision to adjust the angle between the shank and the fluke, wherein the angle adjustment provision is a hinge between the fluke and the shank, a first positioning member connected to the shank that is provided with a series of first positioning holes at a first intermediate distance and a second positioning member connected to the fluke that is provided with a series of second positioning holes at a second intermediate distance and spaced apart from the hinge axis, and a positioning pin that is inserted in one of the aligned first and second positioning holes, wherein the second intermediate distance differs from the first intermediate distance.

The self-installing anchor is configured for falling vertically through the water, embedding vertically into the soil, rotating and translating diagonally deeper through the soil in response to the anchor line load being transmitted to it, and achieving its maximum holding capacity with the anchor line acting normal to the fluke. In various implementations, a coupling mechanism at one end of the shank is engaged with a bearing surface at an entry end of the fluke to hold the shank close to the fluke while falling through the water and embedding vertically into the soil. The coupling mechanism provides eccentricity to the load applied and allows for the rotation of the anchor. The coupling mechanism is disengaged at a predetermined angle, liberating one end of the shank, and the point of application of the force on the anchor is modified to make it dive deeper into the soil.

A method of driving a work body to an obtuse angle relative to a drive body by providing a pivotal mounting of a work body such that it can pivot up to 180 degrees, mounting a drive body at a spaced position above the pivotal mount of the work body, pivotally mounting a first end of an elongated lever arm and pivotally mounting the distal second end to the operative end of the linear actuator and providing a drive arm from the work body to a leverage position on the lever arm between the first and second end. Also, the drive arm is pivotally mounted by the drive arm mount to the lower drive body and a sliding pivot slot pin is received in the linear slot extending along a portion of the drive arm to define a direction and limitation of movement of the drive arm relative to the lever arm.