A　large　amount　of　NOx　and　SO2　emitted　from　ships　may　elevate　atmospheric　N　and　S　and　eventually　aggravate　the　deposition　of　N　and　S.　The　understanding　of　N　and　S　deposition　due　to　ship　emissions　is　still　limited,　especially　for　China　because　it　has　a　long　coastline,　busy　shipping　routes,　and　several　large　ports.　To　fill　this　gap,　a　comprehensive　air　quality　model　was　employed　in　this　study　to　quantify　the　contributions　of　ship　emissions　to　N　and　S　deposition　on　a　national　scale　in　China.　Both　the　spatial　and　temporal　variations　of　N　and　S　deposition,　as　well　as　the　major　N　and　S　species　from　ship　traffic,　were　investigated.　The　results　indicate　that　ship　emissions　contributed　significantly　to　the　deposition　of　N　and　S,　especially　in　coastal　and　offshore　areas,　where　the　largest　ship　contribution　to　both　N　and　S　deposition　could　exceed　15　kg.ha(-1).yr(-1).　For　N　deposition,　ship　emissions　caused　an　increase　in　the　total　N　deposition,　not　only　in　port　areas　and　along　shipping　routes　but　also　far　inland,　with　evident　seasonal　variations.　The　contribution　from　dry　N　deposition　was　evidently　larger　than　wet　N　deposition,　especially　over　the　coastal　areas.　S　deposition,　however,　was　generally　higher　along　shipping　routes　but　exhibited　distinct　seasonal　variations.　The　total　S　deposition　was　dominated　by　dry　deposition,　especially　over　offshore　areas.　Ship-caused　dry　S　deposition　occurred　mainly　in　offshore　areas,　while　wet　S　deposition　could　be　found　over　wider　inland　regions　and　inland　waterways,　although　with　a　markedly　smaller　magnitude.　(C)　2019　Elsevier　B.V.　All　rights　reserved.