In today's terms, it's useable but not more than barely adequate. The BO, 10/12 gunner, and 12/10 engis are all decent enough. But the reps are a step below what you'll eventually want (and likely acquire from events). Even just regular elites are strictly better than your gunners, the engis with 9 repair, and the repairers. With the sheer numbers of those that have been given away in events (and the proliferation of even better sailors), you even have a decent chance of just bumming some off someone else if you ask around.
My recommendation is to look for a total of 6-7 engis, 2-3 repairers, and at least one spare gunner for ASW.