<p>Recent advances in space engineering have brought crewed lunar exploration within reach, with permanent scientific bases now under active consideration. Among the fundamental science opportunities enabled by such efforts, the use of the Moon as a resonant bar for detecting deci-Hertz gravitational waves is particularly compelling, as the Moon itself functions as the detector and is therefore intrinsically linked to lunar programs. The feasibility of this concept relies on the availability of sensitive and robust seismometers as readout probes. A necessary first step is a systematic comparison of existing seismometer technologies, including their performance limits, technological maturity, suitability for off-world deployment, and other factors relevant to a realistic development roadmap. Here, we present a concise assessment of plausible candidates and provide basic expressions to facilitate cross-disciplinary translation.</p>