A sailboat support includes a keel support platform, a mechanical linkage assembly, and rotating support arms to proportionally distribute the weight of the sailboat between the keel and the hull. The support is designed so that the keel bears the majority of the load while the hull receives proportional support through a flexible cradle. The system is self-adjusting, thus reducing the need for manual adjustments and improving ease of use and safety.

An antifreeze delivery system includes a container that defines a chamber for containing a volume of an antifreeze. The system further includes a conduit having an upstream end and a downstream end. The upstream end of the conduit is fluidly connected to the container to receive the volume of the antifreeze from the container. The system further includes a cap assembly that fluidly connects the downstream end of the conduit to an inlet opening defined by a top rim of a sea strainer. The cap assembly includes a lid having a planar wall with top and bottom surfaces. The lid defines a channel extending between the top and bottom surfaces and receiving the downstream end of the conduit. The system further includes one or more fasteners for attaching the lid to the sea strainer and sandwiching a seal between the lid and the top rim of the sea strainer.

An antifreeze delivery system includes a container that defines a chamber for containing a volume of an antifreeze. The system further includes a conduit having an upstream end and a downstream end. The upstream end of the conduit is fluidly connected to the container to receive the volume of the antifreeze from the container. The system further includes a cap assembly that fluidly connects the downstream end of the conduit to an inlet opening defined by a top rim of a sea strainer. The cap assembly includes a lid having a planar wall with top and bottom surfaces. The lid defines a channel extending between the top and bottom surfaces and receiving the downstream end of the conduit. The system further includes one or more fasteners for attaching the lid to the sea strainer and sandwiching a seal between the lid and the top rim of the sea strainer.