OpenSource Pharo AIS viewer

Hi AisStream community.

We want to build a cartogaphic based app to help visualize AIS data using Pharo Smalltalk in an opensource project. 
When the project will be published, i'll add a link in a following comment on this "issue".

Can we store some data for offline demo use ?
What is the licence of data we get from AisStream ? GPL ? MIT ? other ? 

Thanks by advance.