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As one non-limiting example, a foldable mast assembly for a sailing vessel is provided. The foldable mast assembly includes a lower mast section; an intermediate mast section having a lower end foldably coupled to an upper end of the lower mast section; an upper mast section having a lower end folda

As one non-limiting example, a foldable mast assembly for a sailing vessel is provided. The foldable mast assembly includes a lower mast section; an intermediate mast section having a lower end foldably coupled to an upper end of the lower mast section; an upper mast section having a lower end foldably coupled to an upper end of the intermediate mast section; and a boom coupled to the lower mast section. A locking device internal the mast assembly is also provided to inhibit folding of the mast assembly.

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We claim: 1. A foldable mast assembly for a sailing vessel, comprising: a lower mast section; an intermediate mast section having a lower end foldably coupled to an upper end of the lower mast section; an upper mast section having a lower end foldably coupled to an upper end of the intermediate mas

We claim: 1. A foldable mast assembly for a sailing vessel, comprising: a lower mast section; an intermediate mast section having a lower end foldably coupled to an upper end of the lower mast section; an upper mast section having a lower end foldably coupled to an upper end of the intermediate mast section; a boom coupled to the lower mast section; and a first locking device configured to: inhibit folding of the upper mast section relative to the intermediate mast section in a locked position; and permit folding of the upper mast section relative to the intermediate mast section in an unlocked position; wherein the first locking device includes a first moveable insert internal the upper and intermediate mast sections, whereby the first moveable insert is moveable between the locked and unlocked positions by adjusting an amount of overlap between the moveable insert and at least one of the intermediate and upper mast sections. 2. The foldable mast assembly of claim 1, wherein the boom includes a boom furler for furling and unfurling a sail. 3. The foldable mast assembly of claim 1, further comprising a mast stepping support adapted to receive and rigidly couple a lower end of the lower mast section to a sailing vessel. 4. The foldable mast assembly of claim 1, wherein the upper end of the lower mast section is foldably coupled to the lower end of the intermediate mast section by a first hinge assembly, wherein the first hinge assembly is arranged on a stern side of the mast assembly. 5. The foldable mast assembly of claim 4, wherein the upper end of the intermediate mast section is foldably coupled to the lower end of the upper mast section by a second hinge assembly, wherein the second hinge assembly is arranged on a bow side of the mast assembly. 6. The foldable mast assembly of claim 1, wherein the upper mast section is longer than the intermediate mast section; and wherein the upper mast section is longer than the lower mast section. 7. The foldable mast assembly of claim 1, wherein an upper end of the upper mast section folds from an erected position toward the bow side of the mast assembly and wherein the upper end of the intermediate mast section folds from the erected position toward the stern side of the mast assembly. 8. The foldable mast assembly of claim 1, further comprising a second locking device configured to: inhibit folding of the intermediate mast section relative to the lower mast section in a locked position; and permit folding of the intermediate mast section relative to the lower mast section in an unlocked position; wherein the second locking device includes a second moveable insert internal the intermediate and lower mast sections, whereby the second moveable insert is moveable between the locked and unlocked positions by adjusting an amount of overlap between the second moveable insert and at least one of the intermediate and lower mast sections. 9. The foldable mast assembly of claim 8, wherein the first and second moveable inserts each include an elongate element that is tapered along its length. 10. A foldable mast assembly for a sailing vessel, comprising: an upper mast section including a first track segment at a stern side of the upper mast section, the first track segment being adapted to guide a luff edge of a sail between a raised configuration and a lowered configuration of the sail; an intermediate mast section including a second track segment at a stem side of the intermediate mast section, the second track segment being adapted to guide the luff edge of the sail between the raised configuration and lowered configuration; a first hinge assembly foldably coupling a lower end of the upper mast section at a bow side of the upper mast section to an upper end of the intermediate mast section at a bow side of the intermediate mast section; a lower mast section having a lower end adapted to be received by a stepping support of the sailing vessel; and a second hinge assembly foldably coupling a lower end of the intermediate mast section at the stern side of the intermediate mast section to an upper end of the lower mast section at a stern side of the lower mast section, wherein the second hinge assembly includes: a first hinge, including a first hinge half coupled to the intermediate mast section and a second hinge half coupled to the lower mast section; and a second hinge, including a third hinge half coupled to the intermediate mast section and a fourth hinge half coupled to the lower mast section; wherein the second track segment is located alone the length of the stern side of the intermediate mast section and passes between the first and third hinge halves at the lower end of the intermediate mast section; wherein the lower mast section further includes a third track segment at the stern side of the lower mast section, the third track segment being adapted to guide the luff edge of the sail between the raised configuration and the lowered configuration; wherein the third track segment and the second track segment are aligned to guide the luff edge of the sail between the second track segment and the third track segment. 11. The foldable mast assembly of claim 10, wherein the first and second track segments are aligned to guide the luff edge of the sail between the first track segment and the second track segment. 12. The foldable mast assembly of claim 10, wherein the second track segment has an upper end that extends to the upper end of the intermediate mast section and a lower end that terminates a distance from the lower end of the intermediate mast section before reaching the second hinge assembly. 13. The foldable mast assembly of claim 12, wherein the first track segment has a lower end that extends to the lower end of the upper mast section and an upper end that terminates near the upper end of the upper mast section. 14. The foldable mast assembly of claim 10, further comprising a boom coupled to the lower mast section between.