The powerful team (red boat) feels safe, heading over rough waters with the aid of a sonar.
The iceberg is part of the metaphor, related to software security. Iceberg communicates the futility of technological tools that only look in one direction (bottom). The future should be gauged as well. In another perspective, the small tip of the same iceberg that stops the boat (lest it change its direction), can be seen as something the team has - in everyday crave of speedy development - resorted to, without thinking of the "cost" of carrying around a big chunk of code.