 Upon commissioning , the sister ships were assigned to the 1st Battleship Division of the 1st Fleet . Hyūga had an explosion in one of her main gun turrets that killed 11 men and injured 25 in 1919 ; the following year she accidentally collided with and sank a schooner , losing two crewmen . Before the start of the Pacific War , both ships frequently exercised off the coasts of the Soviet Union , Korea and China in addition to training in Japanese waters . Ise hosted Edward , Prince of Wales , and his aide @-@ de @-@ camp Lieutenant Louis Mountbatten in 1922 during the prince 's visit to Japan . In Korea Bay when the 1923 Great Kantō earthquake struck , they sailed to Kyushu where they loaded supplies from for the victims on 4 September . Together with two other battleships and a pair of light cruisers , Ise sank the destroyer Yayoi in 1926 during gunnery practice . Ise 's AA armament was upgraded in 1931 and Hyūga 's two years later . The latter ship was modernized in 1934 – 36 and Ise in 1935 – 37 , both at Kure Naval Arsenal . During the Second Sino @-@ Japanese War , the sisters frequently patrolled the Chinese coast in support of the blockade imposed by Japan . In August 1937 Hyūga ferried two battalions of Special Naval Landing Forces to Port Arthur . Three years later , she served as the flagship for the Emperor of the puppet state of Manchukuo , Henry Pu @-@ yi , during his state visit to Japan in June 1940 . On 15 November the ships were transferred to the 2nd Battleship Division of the 1st Fleet . The sisters were refitted in late 1940 in preparation for war , which included the fitting of external degaussing coils and additional AA directors . 
 Upon commissioning , the sister ships <a href='uninflect' title='1'><mark>were</mark></a> assigned to the 1st Battleship Division of the 1st Fleet . Hyūga had an explosion in one of her main gun turrets <a href='null_relcl' title='2'><mark>that</mark></a>killed 11 men and injured 25 in 1919 ; the following year she accidentally collided with and sank a schooner , losing two crewmen . Before the start of the Pacific War , both ships frequently exercised off the coasts of the Soviet Union , Korea and China in addition to training in Japanese waters . Ise hosted Edward , Prince of Wales , and his aide @-@ de @-@ camp Lieutenant Louis Mountbatten in 1922 during the prince <a href='null_genetive' title='3'><mark>'s</mark></a>visit to Japan . In Korea Bay when the 1923 Great Kantō earthquake struck , they sailed to Kyushu where they loaded supplies from for the victims on 4 September . Together with two other battleships and a pair of light cruisers , Ise sank the destroyer Yayoi in 1926 during gunnery practice . Ise <a href='null_genetive' title='4'><mark>'s</mark></a>AA armament was upgraded in 1931 and Hyūga <a href='null_genetive' title='5'><mark>'s</mark></a>two years later . The latter ship was modernized in 1934 – 36 and Ise in 1935 – 37 , both at Kure Naval Arsenal . During the Second Sino @-@ Japanese War , the sisters frequently patrolled the Chinese coast in support of the blockade imposed by Japan . In August 1937 Hyūga ferried two battalions of Special Naval Landing Forces to Port Arthur . Three years later , she served as the flagship for the Emperor of the puppet state of Manchukuo , Henry Pu @-@ yi , during his state visit to Japan in June 1940 . On 15 November the ships <a href='uninflect' title='6'><mark>were</mark></a> transferred to the 2nd Battleship Division of the 1st Fleet . The sisters <a href='uninflect' title='7'><mark>were</mark></a> refitted in late 1940 in preparation for war , which included the fitting of external degaussing coils and additional AA directors . 
Upon commissioning , the sister ships was assigned to da 1st Battleship Division of tda1st Fleet . Hyūga had an explosion in one of her main gun turrets killed 11 men and injured 25 in 1919 ; the following year she accidentally collided with and sank a schooner , losin two crewmen . b4 the start of thdaacific War , both ships frequently exercised off the coasts of the Soviet Union , Korea and China in addition to training in Japanese waters . Ise hosted Edward , Prince of Wales , and his aide @-@ de @-@ camp Lieutenant Louis Mountbatten in 1922 durin thedaince  visit to Japan . In Korea Bay when the 1923 Great Kantō earthquake struck , they sailed to Kyushu where they loaded supplies from fir the victims on 4 September . Together w 2 other battleships and a pair of light cruisers , Ise sank the datroyer Yayoi in 1926 dduringunnery practice . Ise  AA armament was upgraded in 1931 and Hyūga  tw2ears later . The latter ship was modernized in 1934 – 36 and Ise in 1935 – 37 , both at Kure Naval Arsenal . During the Second Sino @-@ Japanese War , the sisters frequently patrolled the Cdaese coast in support of the blockade imposed by Japan . In August 1937 Hyūga ferried two battalions of Special Naval Landing Forces to Port Arthur . Three years later , she served as the flagship for the Emdaor of the puppet state of Manchukuo , Henry Pu @-@ yi , dudurinis state visit to Japan in June 1940 . On 15 November the ships was transferred to the 2nd Battleship Division of the 1stdaeet . The sistda was refitted in late 1940 in preparation for war , which included the fitting of external degaussing coils and additional AA directors .