The Remus 6000 is a AUV developed by Kongsberg. The model is created in 3ds Max 2019, and rendered in V-Ray next.
I work as close to real world scale as i can (in cm). I build my models based on blueprints, photos and / or data found on internet.
The materials are V-ray materials with exported substance painter textures. All surfaces are unwrapped and have non-overlapping texture spaces.
For modelling i like to create hard surface models without sub-d options. I have subdivided the models before cutting out the doors or other shapes. My opinion is that this will keep polycount relatively low. The edges are bevelled in.
The shown renders are created with a studio lighting setup. The images are without Photoshop post processing, except cutting out the background