After researching the boat ramp named Northeast 12th Terrace 1667 in Cape Coral, Florida, it appears to be a public boat ramp. The width of the ramp is not readily available online. However, according to the Lee County website, the boat ramp provides access to the Caloosahatchee River, which is a saltwater body of water.

The Caloosahatchee River is a popular location for fishing, boating, and water sports. According to the Florida Fish and Wildlife Conservation Commission, the following watercraft are permitted on the river: canoes, kayaks, stand-up paddleboards, motorized boats, and personal watercraft (such as jet skis). The commission regulates the types of boats that can operate in certain areas of the river, so it is important to follow all posted signs and regulations.

Overall, Northeast 12th Terrace 1667 boat ramp provides access to a popular saltwater body of water for various types of watercraft.