Time training is time spent getting ready to do the business. Doesn't matter if that training time is 20,000 feet over an air weapons range, 5 feet deep in a trench line in Wainwright/Gagetown/Petawawa, or sailing around the ocean gaining currencies after a refit. You're being awarded a medal for literally being capable of going to sea. You know what the actual incentive the CAF gives you for doing that? SDA. Much like I get paid more for being in a field unit and having to do field stuff, you get paid more for being on a ship and going to sea. The fact that you think you need a uniform device to show people that you've sailed while wearing a RCN uniform means that you think so poorly of the readiness/availability of the RCN that just the uniform alone isn't enough to signify someone has more time at sea than in port.
As noted earlier, SSI is just a big male sexual organ measuring contest to see who is "the better sailor", when realistically the rank and position should denote experience and trust that the sailor can/has done their job, and done it well. Giant white ensigns on uniforms, SSIs, ordering all shore-posted pers to wear NCDs smacks of an identity crisis and a constant feeling of inferiority instead of focusing on being a quiet professional and letting the myriad of news articles from Op CARIBBE and CTF-150 (among many others) do the talking.