Check out Submarine Models Pack 3D model on CGTrader for $150. High-quality mesh by vfxcgartist.
STL (Stereolithography, filesize: 4.19 GB), OBJ (OBJ, filesize: 4.19 GB), OTHER (Other, filesize: 230 MB), PNG (PNG, filesize: 4.19 GB), FBX (Autodesk FBX, filesize: 4.29 GB), ABC (Alembic, filesize: 4.19 GB), GLTF (glTF, filesize: 4.19 GB), BLEND (Blender, filesize: 4.19 GB), MA (Autodesk Maya, filesize: 4.19 GB), C4D (Cinema 4D, filesize: 4.19 GB), MAX (Autodesk 3ds Max, filesize: 4.19 GB), UNITYPACKAGE (Unity 3D, filesize: 4.19 GB), TBSCENE (Marmoset Toolbag, filesize: 4.19 GB), TEXTURES (Textures, filesize: 1.11 GB)