1990 Sea Nymph SS 175 transom thickness

[dvanvels]

I am in the process of removing the plywood transom. Does anyone know the correct thickness? It is either swollen or so rotted that I'm not sure what the proper thickness should be. My guess is 2.00 inches exactly but I'm hoping someone can confirm. I want to replace with Coosa board.

 

[jbcurt00]

Most likeky 1.5in, if outboard,

 

[dvanvels]

I forgot to say the boat is a 1990 Sea Nymph SS 175 with outboard motor. I removed the rotten plywood. The channel at the bottom edge is 2 1/8" and must also contain the 60 mil thick aluminum skin on the inside. Before removing the drain tubes I slid some wood pieces between the aluminum skins and 1 3/4" seemed like it was too loose and 1 7/8" seemed about right. This seems like an odd thickness for a plywood. How tight does the transom plywood fit in the channel?

 

[havoc_squad]

I forgot to say the boat is a 1990 Sea Nymph SS 175 with outboard motor. I removed the rotten plywood. The channel at the bottom edge is 2 1/8" and must also contain the 60 mil thick aluminum skin on the inside. Before removing the drain tubes I slid some wood pieces between the aluminum skins and 1 3/4" seemed like it was too loose and 1 7/8" seemed about right. This seems like an odd thickness for a plywood. How tight does the transom plywood fit in the channel?

Could you take some photos or descriptions of the extent of what parts had to be removed to get to the transom? I have the same year and model, but no issues with transom strength.

I'd like to know how much crud would have to be disassembled in order to add a climbing ladder in the back.

I'm sure its quite a job since there's no way to reach the starboard or port side of the transom on its design without disassembly.