Well the cost of stacked was currently 77 vessels, while it is not consistent across the stacked fleet, because we have a different locations at which we stack and in some cases, we have fewer and in some places we have more vessels, which create certain scale-based economies. What we're trying to highlight is that, we are not taking where many cases has very new equipment and putting up it in the grass and hoping for the best. And as a result, our stack cost may be higher than some of our competitors who may not be approaching their stack fleet in the same way. We call it smart stacking, I think the phrase has been used by the some of the rig owners as well. But importantly, our expectation is that those vessels will be well-positioned to return to the market when the demand supports it, bottom-line is that our stack costs run about a $1,000 plus or minus per day, per vessel. So, you can do the math on that depending up on your expectations in terms of the trend and the stack fleet. So, that's the cost to maintain the stack fleet, the value of those vessels in a disposition scenario, I guess at the end of day, it requires a buyer and a price and the ability to write a check. Our sense today is that the bid for OSVs is relatively weak today, but I wouldn't say that we are precluding the disposition of vessels, either as part of a high grading exercise or to generate liquidity, which as you would suspect would be primarily focused on reducing outstanding debt. We have no specific plan to sell the 77 vessels or any other vessels that are in stack. That said, I would highlight that over a decade or so, we've consistently sold 10 vessels to 15 vessels per quarter. We continue to sell largely the smaller lower book value vessels, while maintaining the higher spec, bigger vessels and it's also worth noting that much of what we sell tends to be outside the oil and gas market, whether it's Caribbean cargo trade, Nigerian security or whatever. And we have done that, over many, many years successfully, the fact of the matter is, there is not a lot of demand for these ships in the oil and gas space and we're not looking to do a fire sale, I guess this is the punch line.