I wonder if the Oman Aggressor is teh same boat Extra Divers used for the Halanyiat islands, which I would love to do.
I'm sceptical about the Aggressor, given that they state that the Summer temperatures in Oman will be around 30C. It won't drop that low at night, and during the day will be significantly higher. The sea will be 30C
They are publicising a Musandam schedule from Sept - Nov 2018 (although I heard they might do it this year. I'm my opinion this is a car crash waiting to happen.
The best site of the Musandam are not for the inexperienced. What makes it special are the big currents that bring plenty of fish. These currents will give anything that Indonesia has to offer a run for their money. Often down currents come from nowhere, the sea bed on the best sites is at 90-100m. I've personally been slapped down from 30m to 56m it's not funny. Hence we dive AL 80 as a pony.
If they just hit benign sites then it's just the bays, which are okay but low vis and not a great deal of action. I know this because I run and guide monthly charter trips up there and I'm very selective on who I'll take.
In Aug I start working part time for an operator because they trust my knowledge of the area - but those trips will only be 2 night trips to easy sites which would be the far end of the Aggressors route
Given they have 7 days to fill with 3-4 dives a day it could be a very dull trip - or very exciting for all the wrong reasons.
All the experienced people who know the area work out of Dibba, and it's only a handful. I wonder who will be their dive staff and how much local experience they have.
If I had $3500 to blow on the trip I'd probably go for the giggles.
An A/c dhow would run at approx $900 for 3 nights which is enough to cover all the good sights - you could spend the difference on a good time in Dubai...