1920 to 8.6 million in 1928, and 7,1 million in 1938.
The construction of the oldest quays at the feet of the city is known from the archeological investigations. The oak beams of the carrying grid were laid on a clay and peat layer. Their sliding down into water was prevented by timber hooks, which were anchored in the dike. Mooring piles provided additional strengthening. Larger ships were stopped by special platforms built a long way into the water. Since the 3 century the quays were platforms built from flat boards supported by two rows of thick pillars. The mooring piles were 30 cm in diameter, and 3.5 meters long, and were protected from rotting by scorching. The river and channel banks were strengthened by caissons filled with clay and stones. The embankments were up to 6 meters wide.
The main streets of the Right City laid out in the I 4th century led to the harbour
Figure 2. The development of the Gdansk harbour (left,). The Pilots’ Tower — design from 1893. At the top, below the weathercock, there is the time signal ball (right).
Danzig Report Vol. 1 - Nr. 109 - October - November - December - 2000, Page 20.
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