Connecting all major Tallinn harbours, Maritime Days brings together a large number of sea and harbour related events, concerts, boat trips, water related attractions and performances. Explore famous vessels, enjoy sea shows and concerts. There will also be plenty of exciting activities organised for kids.
The festival focus in 2014 is on steamboats with free entry to the majority of scheduled events and attractions.

Source: http://www.tourism.tallinn.ee/eng/fpage/experience/cultural_highlights#!4860_10666_1
Source: http://www.tallinnamerepaevad.ee/uus/en/