Which radar system is affected by seawater?

All radar systems listed, including SLQ 32, Spy, and 49, can be affected by seawater due to the environment in which they operate. Seawater can introduce challenges such as increased interference and attenuation of radar signals, which impacts the effectiveness of these systems.

The SLQ 32 is a surface ship electronic warfare system that uses radar jamming and deception techniques. Its performance can degrade in high humidity or high salinity environments like those found at sea.

The Spy radar, part of the Aegis combat system, is designed for tracking and targeting but can suffer from signal degradation caused by atmospheric conditions influenced by seawater.

The 49 radar system, which is used for a range of surveillance purposes, may face similar challenges where seawater reduces its operational effectiveness.

Thus, all of the identified radar systems experience adverse effects from seawater, which leads to the conclusion that they can be collectively affected by the marine environment.