The Navy has issued a Request for Proposal with options for up to three heavy polar icebreakers. Its not a block buy, but it is a bit of a surprise. I have copied and pasted the brief summary below. (Thanks to Tups for bringing this to my attention.)
Solicitation Number:
Notice Type:
Synopsis:
Contracting Office Address:
Primary Point of Contact.:
Secondary Point of Contact:

Last I heard in January 2018, there’s only sufficient funds to Build One Heavy Icebreaker.
Yes there are options for future years. That is the way the Coast Guard has been doing their ship building contracts. It is dependent on future year funding for #2 and #3. Still it at least suggest that we have near term plans for the second and third.
I’m not surprised. Doubt they would have done a block buy for a first in class vessel plus 2 others. Makes sense to buy and test the first, and have options for the remainders. May have to make design changes, etc.
Really interested to see who submits. Predict NASSCO and Marinette Marine/Fincantieri with Acker Philly, don’t know if Ingalls will submit or Vigor Seattle.
What I had heard was going to happen was buy one and then latter a block buy for #2 and 3. Maybe the option for two and three is in the form of a block buy. At any rate, good news–finally.
Agreed. Progress!
Follow on ships all depend on HOW the option is structured. And of course whether the Congress appropriates enough to fund one or two more ships.
NASSCO is always a good source, depends on their orderbook?
Aker Philly just had a cancellation, but more imporatantly can they build a heavy icebreaker in their DD?
Does Fincantieri have an icebreaker in its porfolio? Does MMC have a DD big enough?
I didn’t think Vigor was a ship building yard anymore?
Does NASSCO have an icebreaker in their portfolio?
Fincanteri actually owns Vard, who has icebreakers in their portfolio. Vard, BTW, designed the OPC. I think that there’s already an agreement with Acker to build the icebreaker in their yard.
Vigor does do new construction.
Based on this video (1:10 onwards), NASSCO has teamed up with VARD:
The concept drawing shown in the background is obviously based on the Canadian polar icebreaker CCGS John G. Diefenbaker that will enter service sometime in the 2020s.
As for Aker/Philly Shipyard, here’s their press release on teaming up with Fincantieri/VARD:
http://www.phillyshipyard.com/s.cfm/2-38_71/Philly-Shipyard-Member-of-USCG-Heavy-Polar-Icebreaker-Design-Team
Apparently that was just a draft. Now DHS has given permission to issue the actual RFP. http://www.dcms.uscg.mil/Our-Organization/Assistant-Commandant-for-Acquisitions-CG-9/Newsroom/icebreaker_022218/