Attached photos of the before-mentioned batteries in Trondheimsfiord (sources: See comment on each photo). The barges "NB1" and "NB2" were anchored up at Brettingen (northside of the fiord) and Selva (southside).Edward L. Hsiao wrote:I have to yet see a real picture of that interesting floating torpedo battery vessel.
The barges couldn't handle the full weight of a vierling rohrsatz, so the right tube (no 4) on each were removed. These two single tubes were mounted on a smaller barge that was anchord up alongside the barge at Selva.
Later, the vierling rohrsätze were reassembled and mounted as rather simple batteries on shore: One at Hysneståa (Torpedobatterie Hasselvik) with no shed (appearently) and one at Hambåra under a wooden shed (Torpedobatterie Hambaara). The latter remained like this for the duration of the war (and in norwegian service post WW2), while the battery at Hysneståa were moved to a fully fortified SK-bunker at Sørviknes (later in norwegian service until 1994).