Based on my research, the Connecticut River boat launch in New Hampshire is a public boat ramp located on the Connecticut River. It is situated at latitude 43.48055267 and longitude -72.37914276. According to the New Hampshire Fish and Game Department, the boat ramp is an asphalt ramp with a concrete curb, and it is wide enough to accommodate larger boats.

The Connecticut River boat launch is designed to serve the Connecticut River, which is a major waterway in the northeastern United States. The Connecticut River flows through several states, including New Hampshire, Vermont, Massachusetts, and Connecticut. It is known for its scenic beauty and recreational opportunities, including boating, fishing, swimming, and wildlife viewing.

As for the types of craft permitted on the water, the New Hampshire Fish and Game Department states that boats of all sizes are allowed on the Connecticut River, provided they comply with state and federal laws and regulations. This includes motorized boats, non-motorized boats, and personal watercraft.

In conclusion, the Connecticut River boat launch is a public boat ramp located on the Connecticut River in New Hampshire. It is wide enough to accommodate larger boats, and it serves as a launch point for a variety of watercraft, including motorized and non-motorized boats, and personal watercraft.