▁maximum ▁depth ▁of ▁forty - five ▁hundred ▁meters , ▁and ▁from ▁April ▁ 2 0 , ▁ 2 0 1 4 ▁th ru ▁April ▁ 2 2 , ▁ 2 0 1 4 , ▁Se ah or se ▁U AV ▁conducted ▁more ▁than ▁sevent een ▁div es ▁in ▁three ▁different ▁phases ▁of ▁sea ▁trial , ▁reaching ▁the ▁maximum ▁designed ▁depth ▁to ▁ 4 5 0 2 ▁meter . ▁After ▁the ▁successful ▁sea ▁tri als , ▁state ▁cert ification ▁is ▁received ▁soon ▁after , ▁and ▁there ▁are ▁plans ▁to ▁develop ▁different ▁models ▁based ▁on ▁the ▁original ▁Se ah or se . ▁Se ah or se ▁RO U V ▁is ▁designed ▁to ▁perform ▁a ▁variety ▁of ▁research ▁miss ions ▁and ▁it ▁is ▁equ ipped ▁with ▁son ar , ▁cam eras , ▁mechanical ▁arms , ▁and ▁in ▁addition ▁to ▁research ▁miss ions , ▁Se ah or se ▁RO U V ▁is ▁also ▁capable ▁of ▁performing ▁maintenance ▁work ▁on ▁scientific ▁equipment ▁on ▁se ab ed . ▁Se ah or se ▁util izes ▁mod ular ▁design ▁concept ▁to ▁enable ▁different ▁tools ▁to ▁be ▁replaced ▁rapidly ▁based ▁on ▁mission ▁needs ▁while ▁sharing ▁a ▁common ▁ch ass is . ▁During ▁deployment , ▁Se ah or se ▁RO U V ▁is ▁usually ▁carried ▁by ▁Chinese ▁scientific ▁research ▁vessel ▁Ocean ▁ 6 ▁( H ai - Y ang ▁or ▁H ai y ang ▁ 6 , ▁ 海 洋 6 号 ), ▁though ▁it ▁can ▁also ▁be ▁carried ▁by ▁other ▁Chinese ▁ships ▁equ ipped ▁to ▁handle ▁RO U V s . ▁