The U.S. Department of Transportation and Maritime Administration (MARAD) have formally launched an initiative to explore small modular nuclear reactors (SMRs) for commercial vessels, issuing a Request for Information on May 7, 2026. This effort, tied to President Trump's executive orders on energy dominance and maritime revitalization, aims to slash fuel costs, reduce maintenance, enable faster longer-range shipping, and integrate nuclear production into American shipyards while addressing liability, insurance, and port access frameworks. Official statements emphasize revitalizing U.S. shipbuilding, securing energy independence, and countering global competitors advancing nuclear maritime tech. SMRs, defined as under 300 MW and factory-fabricated for scalability, are positioned as a decarbonization breakthrough for an industry resistant to other zero-emission fuels. Yet beneath the innovation narrative lie under-examined implications that connect to decades of nuclear policy evolution—from military naval propulsion to contested commercial applications. Historical precedents like the NS Savannah, America's 1960s nuclear merchant ship, reveal persistent barriers: exorbitant costs, public opposition, restricted port access due to safety fears, and complex waste management. The current RFI explicitly solicits input on these exact systemic uncertainties, signaling awareness of past failures while pushing forward under a 'system-transition lens.' Deeper connections emerge in proliferation risks. Widespread deployment of nuclear-powered commercial ships could multiply transport of nuclear materials across global trade routes, heightening vulnerabilities to piracy, terrorism, or state diversion—concerns amplified by SMR designs often derived from naval reactor heritage that historically used highly enriched uranium. Environmental hazards extend beyond touted zero-carbon benefits to include potential radioactive releases from accidents in congested sea lanes or ports, thermal pollution, and long-term spent fuel disposal challenges at maritime hubs. These risks are rarely linked in mainstream coverage to broader nuclear policy patterns: a post-Fukushima pivot toward modular, 'inherently safer' designs that lower financial barriers for wider adoption, effectively commercializing and normalizing technologies once confined to military use. Critics note high upfront costs may still demand public subsidies, diverting funds from alternatives, while the push aligns with energy dominance doctrines that prioritize strategic control over nuclear supply chains. This initiative may represent not just technical progress but an acceleration of nuclearization of the maritime commons, with fringe implications for international safeguards, insurance regimes, and the geopolitics of floating reactors that few mainstream analyses connect. Real-world corroboration confirms both the announcement and these overlooked tensions, underscoring how policy evolves quietly from demonstration projects toward systemic integration despite historical and security red flags.