They might close a store or two, but WM is not dead yet.
A cynical observer might think that announcing that they are thinking about Chapter 11 reorganization (not Ch. 7 liquidation) is a way for rich financiers, in this case owners Oaktree Capital Management, to undo bad business decisions and suck as much value out of the company as possible; at the expense of employee, supplier and landlord creditors.
They will likely break a few leases, fire employees, reduce benefits, close a few stores, and default on a few shipments to put pressure on other landlords and vendors to renegotiate their leases and debts, while maintaining the high management fees they charge West Marine, all under the supervision of the Bankruptcy court.
This will likely go on for a while, until the last drop of equity is sucked out of WM and they either liquidate or are bought for pennies on the dollar by a new company, e.g., West Marine Express LLC, to keep churning the pot for the supposed benefit of creditors, but for the actual benefit of Oaktree and its lawyers and accountants.
But that's just one cynical view.