Automation is one of the greatest threats to dockers' jobs.
Accessing the internet at sea can be a real problem. Take a look at this article on new technology for getting online onboard your vessel:
The International Labour Organization (ILO) Maritime Labour Convention (MLC, 2006) will come into force in August 2013, so just 12 months’ time. That’s after being ratified by 30 ILO Member States, the latest being Russia and Philippines.