I was right there with you until you mentioned Radio Shack. I had to look at the date to see if I woke up in the 1980s, as that's really the last time Radio Shack would have been useful (unless you want to buy a shitty mobile phone). Since you used proper name upper casing, that's what I assumed. Especially since you're talking consumer sailing boat where the actual radio shack of a boat is less a shack and usually just a radio unit bolted into some dead space so it won't take up usable space from something else.