Frame rail assemblies and interlocking frame rail systems

An interlocking frame rail system for boat dock structures, comprising:

• a first frame rail member including a first side configured for securing the first frame rail member to a first side of a first boat dock structure;
• a second side opposing the first side;
• a first channel extending along a length of the first frame rail member;
• and a second channel below the first channel, the second channel extending along the length of the first frame rail member;
• a second frame rail member including a first side configured for securing the second frame rail member to a first side of a second boat dock structure;
• a second side opposing the first side;
• a first channel extending along a length of the second frame rail member;
• and a second channel below the first channel, the second channel extending along the length of the second frame rail member;
• and
• an upper connector member extending along at least a portion of the length of the first frame rail member and at least a portion of the length of the second frame rail member, the upper connector member including a first coupling member extending through the first channel of the first frame rail member in removable engagement therewith, and a second coupling member extending through the first channel of the second frame rail member in removable engagement therewith.

A method for interlocking boat dock structures, the method comprising:

• aligning a first frame rail member with a second frame rail member, the first frame rail member comprising a first side, a second side opposing the first side, a first channel extending along a length of the first frame rail member, and a second channel below the first channel and extending along the length of the first frame rail member, and the second frame rail member comprising a first side, a second side opposing the first side, a first channel extending along a length of the second frame rail member, and a second channel below the first channel and extending along the length of the second frame rail member;
• securing the first frame rail member to a side of the first boat dock structure;
• securing the second frame rail member to a side of the second boat dock structure;
• and
• coupling the first frame rail member to the second frame rail member by removeably engaging a first coupling member of an upper connector member with the first channel of the first frame rail member and removeably engaging a second coupling member of the upper connector member with the first channel of the second frame rail member.