pril ▁ 1 9 4 5 ▁ ▁External ▁links ▁▁ ▁Bar nes ▁Wall is ▁Trust ▁ ▁A ▁picture ▁of ▁a ▁Lanc aster ▁carrying ▁a ▁Grand ▁S lam ▁ ▁Article ▁about ▁the ▁def using ▁of ▁the ▁un expl oded ▁T all boy ▁in ▁the ▁Hamb urger ▁Ab end blatt ▁▁ ▁" H uge ▁Bomb ▁Dr ills ▁In to ▁Target ▁Before ▁Ex pl oding ." ▁Popular ▁Mechan ics , ▁February ▁ 1 9 4 5 , ▁p .   4 9 . ▁ ▁Category : A er ial ▁bomb s ▁of ▁the ▁United ▁Kingdom ▁Category : Ant i - fort ification ▁weapons ▁Category : World ▁War ▁II ▁aer ial ▁bomb s ▁of ▁the ▁United ▁Kingdom ▁Category : B arn es ▁Wall is <0x0A> </s> ▁The ▁World ▁Port ▁Days , ▁also ▁known ▁as ▁the ▁World ▁Har bour ▁Days , ▁( D utch : ▁Wer eld hav end agen ) ▁is ▁a ▁large , ▁fest ive ▁mar itime ▁event ▁held ▁ann ually ▁in ▁Rot ter dam . ▁ ▁It ▁is ▁one ▁of ▁the ▁most ▁highly ▁attended ▁events ▁in ▁the ▁Netherlands . ▁ ▁High light s ▁World ▁Port ▁Days ▁is ▁a ▁large ▁annual ▁multi - day ▁event ▁in ▁the ▁first ▁week end ▁of ▁September ▁in ▁the ▁port ▁of ▁Rot ter dam . ▁The ▁aim ▁is ▁to ▁introduce ▁the ▁public ▁to ▁and ▁give ▁a ▁g limp se ▁behind ▁the ▁scenes ▁of ▁the ▁port ▁of ▁Rot ter dam , ▁for ▁example ▁through ▁ship ▁vis its , ▁demonstr ations ▁on ▁the ▁water ▁and ▁present ations ▁by ▁port ▁companies . ▁The ▁event