After conducting research, it appears that Marina del Sur is a boat ramp located in Elephant Butte, New Mexico. It services the Elephant Butte Lake, which is the largest lake in New Mexico. The boat ramp has four lanes and is approximately 40 feet wide, which allows for easy launching and retrieval of watercraft.

As for the types of boats permitted on the lake, there are no specific restrictions on the type of watercraft allowed. However, there are regulations in place that limit the speed and size of boats, as well as the use of personal watercraft such as jet skis.

According to the official website of the New Mexico State Parks, which oversees the Elephant Butte Lake, the latest information indicates that the Marina del Sur boat ramp is open year-round, weather permitting. Visitors are advised to check for any closures or restrictions before heading to the lake.