關於「DNV GL submarine」標籤，搜尋引擎有相關的訊息討論：

Naval submarines - DNVwww.dnv.com › ... › Underwater technology servicesVerification of submarine pipelines - DNVwww.dnv.com › ... › Verification and certification of assetsDNV GL Superyacht Seminar: Submarines, 3D Printing ... - ACREWacrew.com › workshops › dnv-gl-superyacht-s