A training ship is a ship used to train students as sailors. The term is mostly used to describe ships employed by navies to train future officers. Essentially there are two types: those used for training at sea and old hulks used to house classrooms. The hands-on aspect provided by sail training has also been used as a platform for everything from semesters at sea for undergraduate oceanography and biology students, marine science and physical science for high school students, to character building for at-risk youths. Notable training ships Royal Navy Cornwall Indefatigable , including adjacent Mount Edgcumbe Warspite (1877) Warspite (1922) Wellesley Other navies Algerian Navy El-Mellah Argentine Navy Bangladesh Navy BNS Shaheed Ruhul Amin Brazilian Navy Cisne Branco Bulgarian Navy Royal Canadian Navy (sail training) HMCS Grisle Chilean Navy Chinese People's Liberation Army Navy Zheng He Brave the Wave-class Colombian Navy Dominican Navy Finnish Navy Suomen Joutsen German Navy , of the Kriegsmarine , of the Bundesmarine Indian Navy Indonesian Navy KRI Ki Hajar Dewantara Irish Naval Service Italian Navy Japan Maritime Self-Defense Force Mexican Navy Royal Dutch Navy New Zealand Navy Pakistan Navy Peruvian Navy Polish Navy Portuguese Navy The second NRP Sagres The third Romanian Navy Spanish Navy Nautilus Galatea Sri Lankan Navy United States USS Constitution, of the United States Navy , of the United States Coast Guard , of the United States Navy , of the United States Navy Uruguayan Navy Venezuelan Navy Merchant fleet MV Cape Don Christian Radich, Norway Herzogin Cecilie, Germany , France , Russia , Ukraine Kraljica Mora, Croatia , Germany, sunk 1957 , Germany , Russia , Russia , Norway , USA John W. Brown II, USA Statsraad Lehmkuhl, Norway Worcester , Denmark TS Dolphin Leith, United Kingdom TS Dufferin (IMMTS Dufferin), British India TS Rajendra, India TS , India of the Maritime Academy of Asia and the Pacific United States Maritime Administration owned training ships TS General Rudder of the Texas A&M University at Galveston of the SUNY Maritime College TS of the California State University Maritime Academy of the Massachusetts Maritime Academy of the Maine Maritime Academy TS State of Michigan of the Great Lakes Maritime Academy T/V Kings Pointer of the United States Merchant Marine Academy of the United States Merchant Marine Academy T/V Freedom Star of the Paul Hall Center for Maritime Training and Education Sail training vessels Christian Radich Dar Młodzieży Exy Johnson Lady