On the miscellaneovs noise which is affected by different trim of the ship and depth of the sea in Ultra Sonic Echo Souuding
音響測深機の雑音に及ぼすトリム及び水深の影響

T. Kumagori, T. Hashimoto, U. Suzuki
1952 The Journal of the Nautical Society of Japan  
doi:10.9749/jina.6.0_11 fatcat:vb22fsvk4ranlawmr6pv3znjli