Minecraft 1.12 - Explosion damage under water through plugin?

I'm looking for a way to make blast damage underwater. Short description of the project I'm working on:

There are several planets (Spheres made from blocks created by WorldEdit) in a huge space of water. With a texture pack I have the water and underwater particles, etc. Invisible made so that the player feels like he was in space. In the project there's also the possibility to build spaceships with the Movecraft plugin. Everything works perfectly and I'm very familiar and satisfied with the plugin.

The problem is that ships should be able to fight as well. In the air or with ships on the water that has always worked great but now the explosions must do damage under water.

Is there a plugin or similar (please no mods) that ensures that something works?

Movecraft also offers weapons but they are based on normal explosion damage.

Minecraft 1.12 - Spigot 1.12

I do not know if the plugin is running on the server, but give it a try:

https://www.curseforge.com/...s/watertnt

Looks good but unfortunately for the 1.3.2. Was also last updated in 2012 but thanks anyway for the suggestion.