 The process of shipping the submarines by rail involved breaking the submarines down into what was essentially a knock down kit . Each boat was broken into approximately fifteen pieces and loaded on to eight railway flatcars . Type UB I boats destined for service with the Flanders Flotilla made a five @-@ day journey to Antwerp for the two- to three @-@ week assembly process . After assembly at Antwerp the boats were towed by barge to Bruges for trials . Boats selected for service in the Mediterranean were sent to the Austro @-@ Hungarian port of Pola for assembly . The total time from departure of the railcars from the shipyard to operational readiness for the boats was about six weeks . 
 The process of shipping the submarines by rail involved breaking the submarines down into what was essentially a knock down kit . Each boat was broken into approximately fifteen pieces and loaded on to eight railway flatcars . Type UB I boats<a href='been_done' title='1'><mark></mark></a> destined for service with the Flanders Flotilla made a five @-@ day journey to Antwerp for the two- to three @-@ week assembly process . After assembly at Antwerp the boats <a href='uninflect' title='2'><mark>were</mark></a> towed by barge to Bruges for trials . Boats selected for service in the Mediterranean <a href='uninflect' title='3'><mark>were</mark></a> sent to the Austro @-@ Hungarian port of Pola for assembly . The total time from departure of the railcars from the shipyard to operational readiness for the boats was about six weeks . 
Da process of shipping tdasubmarines by rail involved breaking the submarines down into wat was essentially a knock down kit . Each boat was broken into approximately fifteen pieces and loaded on to eight railway flatcars . Type UB I boats been destined for service with the Flanders Flotilla made a five @-@ day journey to Antwerp fir the two- to three @-@ week assembly process . After assembly at Antwerp the boats was towed by barge to Bruges for trials . Boats selected for service in thdaediterranean was sent to the Austro @-@ Hungarian port of Pola for assembly . The total time from departure of the railcars from the shipyard to operational readiness for thedaats was about six weeks .