A disconnectable tower yoke assembly, the tower yoke assembly for connecting a floating vessel to a tower structure in a body of water, comprising: a yoke head having a first portion connectable to the tower structure, a second portion connected to the first portion, and a head connector portion; a yoke having a yoke coupler arranged and designed to connect to and disconnect from the yoke head, the yoke coupler including a coupler connector portion, wherein the head connector portion and coupler connector portion are arranged and designed to matingly engage one another to provide a rigid interconnection therebetween; at least one actuator; and a ballast tank distal of the yoke coupler; wherein the first portion of the yoke head is connectable to a turntable of the tower structure in a manner permitting the yoke head to vertically pivot about a horizontal axis, the turntable being for rotation about a vertical axis of the tower structure; characterized in that: the head connector portion is in communication with the at least one actuator, the at least one actuator being arranged and designed to secure the head and coupler connector portions (66, 70) in mating engagement and arranged and designed to allow the head and coupler connector portions to disengage from one another; the second portion of the yoke head comprises a head conical section and the yoke coupler comprises a coupler conical section, the head conical section being arranged and designed to cooperate and interface with the coupler conical section by providing guidance during connection of the yoke to the yoke head; the assembly comprises a cable having a first end attached to the first portion of the yoke head with the cable extending through the head and coupler conical sections and through the head and coupler connector portions, the cable providing initial guidance of the yoke for connection with the yoke head; and a stationary housing mounted within the head conical section, the stationary housing being a substantially cylindrical housing having a bore therethrough and including an outwardly facing shoulder, wherein the cable extends through the bore and the at least one actuator is positioned and connected to the outwardly facing shoulder of the stationary housing. a yoke head having a first portion connectable to the tower structure, a second portion connected to the first portion, and a head connector portion; a yoke having a yoke coupler arranged and designed to connect to and disconnect from the yoke head, the yoke coupler including a coupler connector portion, wherein the head connector portion and coupler connector portion are arranged and designed to matingly engage one another to provide a rigid interconnection therebetween; at least one actuator; and a ballast tank distal of the yoke coupler; wherein the first portion of the yoke head is connectable to a turntable of the tower structure in a manner permitting the yoke head to vertically pivot about a horizontal axis, the turntable being for rotation about a vertical axis of the tower structure; characterized in that: the head connector portion is in communication with the at least one actuator, the at least one actuator being arranged and designed to secure the head and coupler connector portions (66, 70) in mating engagement and arranged and designed to allow the head and coupler connector portions to disengage from one another; the second portion of the yoke head comprises a head conical section and the yoke coupler comprises a coupler conical section, the head conical section being arranged and designed to cooperate and interface with the coupler conical section by providing guidance during connection of the yoke to the yoke head; the assembly comprises a cable having a first end attached to the first portion of the yoke head with the cable extending through the head and coupler conical sections and through the head and coupler connector portions, the cable providing initial guidance of the yoke for connection with the yoke head; and a stationary housing mounted within the head conical section, the stationary housing being a substantially cylindrical housing having a bore therethrough and including an outwardly facing shoulder, wherein the cable extends through the bore and the at least one actuator is positioned and connected to the outwardly facing shoulder of the stationary housing. the head connector portion is in communication with the at least one actuator, the at least one actuator being arranged and designed to secure the head and coupler connector portions (66, 70) in mating engagement and arranged and designed to allow the head and coupler connector portions to disengage from one another; the second portion of the yoke head comprises a head conical section and the yoke coupler comprises a coupler conical section, the head conical section being arranged and designed to cooperate and interface with the coupler conical section by providing guidance during connection of the yoke to the yoke head; the assembly comprises a cable having a first end attached to the first portion of the yoke head with the cable extending through the head and coupler conical sections and through the head and coupler connector portions, the cable providing initial guidance of the yoke for connection with the yoke head; and a stationary housing mounted within the head conical section, the stationary housing being a substantially cylindrical housing having a bore therethrough and including an outwardly facing shoulder, wherein the cable extends through the bore and the at least one actuator is positioned and connected to the outwardly facing shoulder of the stationary housing.