Re: weight
OK well here is some info for you.....
1977 Silverline Nantucket 16.5V
This inboard/outboard runabout is 16.58 feet long and weighs 1900 (pounds dry). This weight does not account for passengers, fuel, or gear. The beam of this craft is 85 inches.
1977 Silverline Nantucket 17V
This Silverline outboard runabout has a fiberglass hull, is 17.25 feet long and 82 inches wide at the widest point. The boat weighs approximately 1240 pounds with an empty fuel tank and without any gear or passengers.
1977 Silverline Nantucket 17V BR
This Silverline outboard runabout has a fiberglass hull, is 17.25 feet long and 82 inches wide at the widest point. The boat weighs approximately 1300 pounds with an empty fuel tank and without any gear or passengers.
1977 Silverline Nantucket 19.5V
This inboard/outboard runabout is 19.5 feet long and weighs 2580 (pounds dry). This weight does not account for passengers, fuel, or gear. The beam of this craft is 92 inches.
1977 Silverline Nantucket 19V
The 1977, Nantucket 19V is a 18.83 foot outboard boat. The weight of the boat is 1175 lbs
1977 Silverline Nantucket 22VC
This Silverline inboard/outboard runabout has a fiberglass hull, is 22 feet long and 95 inches wide at the widest point. The boat weighs approximately 3240 pounds
All this info found here
http://boatspecs.iboats.com/Silverline__Nantucket__1977/bp/34br1426s4506y
Add the weight of your trailer too......