I don't know....Now I get the feel of buildings from the graphic. We design and build experimental "listening" and "sound generation" electronics for research in sonar systems and underwater acoustics. These systems are used in shallow water and sometimes to depths of 20,000 ft. Sometimes they have buoys on the surface, sometimes they are completely hidden, or on the ocean bottom. One example of a recent design is a high level sound source that can be deployed from a surface boat that mimics navy sonars to see the effect the sound has on Marine mammals. Not sure that helps or not. Thanks.
A big part of our business is "towed arrays", which are long thin cables instrumented with hydrophones (underwater microphones). These are towed by both submarines, and lately by unmanned underwater vehicles (UUVs). UUVs look "torpedo-like". A graphic of a torpedo-shaped vehicle towing a thin cable might be interesting. A bunch of small, evenly-spaced dots on the cable would represent the sensors. This might be the main graphic, or it could a smaller, more subtle graphic (maybe under the text). Don't want to get too cluttered, though. I'll rely on your judgement there.
I've posted this comment to a few of the other designers so if you see similar things popping up, that's why.