Type VII A(lv18)
The Type VII U-boat is a single-hulled attack U-boat with externally mounted dive cells and a central main deve cell in the pressure hull.
VII型U艇是採用外掛電池和在耐壓船殼中央部份放置電池的單殼攻擊潛艇
The pressure hull is constructed from mild steel and is fully welded apart from the area over the main engines, This area is riveted as it must be accessible should the drive unit need to be replaced.
耐壓船殼由低碳鋼構成,並完全焊接主發動機以外的區域,發動機區域是鉚接,因為驅動裝置需要被無礙置換
Type A has a single aft torpedo tube located in the casing outside the pressure hull, therefore reloading is not possible while the U-boat is submerged.
A式有一具船尾魚雷發射管在耐壓船殼之外,因為那區被淹沒因此是不可以重新裝填魚雷的