Heading upstream, Communist Chinese speedboats could reach the vicinity of No.6 sluice (Tihwa Street, Taipei) in 40 minutes: they've even developed hovercraft that travel still faster and could get to downtown Taipei within half an hour.
若過了關渡，溯淡水河而上，中共快艇四十分鐘可以到六號水門（迪化街附近）；現在中共又已發展出氣墊船，速度更快，不到半個鐘頭就能到達台北市中心。