ðə sˈɪksti wˈʌn sˌiːˈɛm tˈaɪp nˈaɪnti toːɹpˈiːdoʊ wʌz mˈaʊntᵻd ɪn tɹˈɪpəl tˈuːb tˈaɪp nˈaɪnti mˈɑːdəl tˈuː lˈɔːntʃɚz ɪt wʌz tɹɐvˈɜːst baɪ ɐn ɪlˌɛktɹoʊhaɪdɹˈɔːlɪk sˈɪstəm ænd kʊd tɹɐvˈɜːs θɹˈiːhˈʌndɹɪd sˈɪksti dᵻɡɹˈiːz ɪn twˈɛntifˈaɪv sˈɛkəndz.
The 61 cm Type 90 torpedo was mounted in triple tube Type 90 Model 2 launchers It was traversed by an electro-hydraulic system and could traverse 360° in twenty-five seconds.