Showing posts with label LPD-17 Flt II. Show all posts
Showing posts with label LPD-17 Flt II. Show all posts

Saturday, August 15, 2020

LSD-41/49 Class and LX(R)

The Navy has designated the LPD-17 as the basis for the LX(R) (now designated LPD-17 Flt II) which is intended to replace the LSD-41/49 class amphibious ships.  The San Antonio LPD-17 class began with the LPD-17 and has continued through LPD-27 with LPD-28 and -29 being designated transition vessels to the LPD-17 Flt II which begins with LPD-30.  The Navy intends to build 13 of the ships.


LX(R) / LPD-17 Flt II


As a reminder, the LSD-41 (Landing Ship, Dock) Whidbey Island class, built in the 1980’s, was designed specifically to transport and launch LCAC vessels and has a capacity of four LCACs which is the most of any amphibious ship.(1)   It can also provide docking and repair services for LCACs and for conventional landing craft.(1)

In 1987 the Navy began construction on LSD-49 Harpers Ferry class which reduced LCAC capacity to two while increasing cargo capacity.(1)

Here’s a few basic specifications for the LSD-41/49 class. (1)  Note the LCAC capacities.


LSD-41/49 Specifications

LSD-41
LSD-49
Length, ft
609
609
Beam, ft
84
84
Displacement, tons
16000
17000
LCAC Capacity
4
2



LSD-41 Whidbey Island Class


There are several questionable aspects to the LPD-17 Flt II program that warrant a bit of discussion.


Well Deck Size.  The LX(R) is intended as the replacement for the LSD-41/49 class.  The problem is that the LX(R) has a significantly smaller well deck than the LSD-41 class and can only carry 2 LCACs.  Here are the well deck dimensions for recent classes of amphibious ships (see, “Wither The Well Deck”).  Note the generally decreasing well deck sizes.


Amphibious Ship Well Deck Size
Whidbey Island LSD-41
440’ x 50’
Harpers Ferry LSD-49
220’ x 50’
Tarawa LHA-1                
268’ x 78’
Wasp LHD-1 
267’ x 50’
America LHA-6 
none
San Antonio LPD-17 
170’ x 50’



The decreased well deck and LCAC capacity represents a significant decrease in ship to shore amphibious capability which seems incongruent with the LSD/LPD’s main function of amphibious assault.  One can’t help but wonder what the Navy sees as the main function of the new LPD-17 Flt II since it clearly isn’t amphibious assault.


Cost.  Navy’s cost target for the LPD-17 Flt II is $1.8B (FY2019$) for the lead vessel, LPD-30, and $1.5B (FY2019$) for the follow on ships (2), however, LPD-31 is now estimated to cost a bit over $2.0B (5) so, as always, the Navy’s cost estimates are significantly understated.

Huntington Ingalls announced a sole-source $1.5B fixed price incentive contract for the lead ship, LPD-30, in Mar 2019.  As usual, this is only a partial cost and does not include advanced procurement funds already expended, Government Furnished Equipment, or post-delivery construction which is an ever-increasing portion and is intended to get around cost caps and make acquisitions seem cheaper than they are.  The true cost is likely $2B+.  Indeed, the Navy’s budget request documents show a cost of $1.7B without GFE or post-construction costs. (4)

As usual, the Navy is not pursuing responsible contracting practices and is doing everything it can to obscure costs.  From the CRS report,

The Navy plans to award sole-source contracts to Huntington Ingalls—the only shipbuilder of Flight I ships—for Flight II construction. Further, the program did not request a separate independent cost estimate for Flight II prior to awarding the LPD 30 detail design and construction contract. At the same time, the Navy identified no plans to establish a cost baseline specific to Flight II. Without this baseline, the Navy would report full LPD 17 program costs—rather than Flight II specific costs—constraining visibility into Flight II. (4, p.14)


Design Basis.  The Navy’s driving force for the ship design was the cost target rather than functionality or combat effectiveness.  As we have repeatedly stated, cost is a secondary consideration for warship design and cannot be the primary design factor.  No good ship was ever designed with cost as the primary design criteria.

From 1Q 2013 to 1Q 2014, the Navy claims to have conducted an Analysis of Alternatives (AOA) with three alternatives considered:

  • modified (reduced capability/reduced-cost) LPD-17
  • brand new designs
  • foreign design

Given the Navy’s documented half-hearted or non-existent AOAs for other ships, one can’t help but wonder about the rigor and validity of this AOA.  The LCS, Ford, Zumwalt, Burke Flt III, and new frigate never got rigorous AOAs.  They were either never performed or they were conducted for show with the outcome having been pre-determined.  Indeed, the selection of the modified LPD-17 strongly suggests that this was yet another example of a pre-determined AOA conducted purely for show.

Following are LX(R) design features compared to the San Antonia Class (3):

  • half the medical spaces
  • smaller hangar for stowing two MV-22 tilt rotor aircraft
  • no composite masts
  • two main propulsion diesel engines instead of four
  • two spots for Landing Craft Air Cushion hovercraft or one Landing Craft Utility boat
  • reduced troop capacity from 800 to 500
  • reduced vehicle storage space
  • enhanced command and control facilities

Competition.  According to the Congressional Research Service, as recently as May 2017, the Navy had publicly stated that a competition would be held between HII’s Ingalls Shipbuilding of Pascagoula, MS, the builder of LPD-17 Flight I ships, and General Dynamics’ National Steel and Shipbuilding (GD/NASSCO) of San Diego, CA.  However, on April 6, 2018, the Navy announced that it would sole-source the design and construction of LPD-30 to HII.  Again, this suggests that the previously announced ‘competition’ was for show and that the builder had been pre-determined from the start.


CONOPS.  One of the major justifications for the LX(R) is the “requirement” to operate independently.  Of course, this is idiotic but that’s the Navy’s story and they’re sticking to it.  Under this concept, the 3-ship Amphibious Ready Groups (ARG/MEU) will routinely disaggregate and operate as independent ships, widely separated geographically.  This, the Navy/Marines claim, will increase flexibility and responsiveness.

The reality is that disaggregated ARGs have even less capability than the mathematical 1/3 capability that splitting them up into three parts would suggest.  For example, the LPD, when operating independently, carries less than a third of a MEU and almost none of the aviation assets.  Similarly, the larger LHA-6 America class, when operating independently, cannot land heavy equipment as they have no well deck.

The Marines state that a MEU is the smallest full-function combat unit.  Subsets of a MEU are, by the Marine’s own definition, incapable of effective combat.  So, what does the Navy/Marines want to do?  Why, split the MEU up and send the pieces off to distant points where they cannot act as a complete unit nor support each other!  Stupid on a shingle!


Commandant’s Vision.  All of the preceding was background for the real point of this post and that is to consider how the LPD-17 Flt II jibes with the Marine Commandant’s recent statements and documents which call for a movement away from the 38 amphibious ship and 2 MEB lift requirements.

It is worth noting at the outset that the LPD-17 Flt II was conceived long before the current Commandant took office.  Thus, it may be that the Flt II doesn’t fit his plans for the Corps, at all !

Commandant Berger has unilaterally and arbitrarily set the Corps on a radically different path, assuming he follows through on his early statements.  To be fair, there are, as yet, few details so much is speculation, at this point.  That said, Berger has been pretty clear that the Marines will move towards small, dispersed units using forward bases.  The question, then, becomes how does the Flt II fit into and support this concept, if at all?

On the one hand, the Flt II, with traditional well decks and LCACs may be considered a relic of the old way thinking which involved massed combat power and amphibious assaults and, thus, of little value in a small unit, dispersed, forward based type of force structure.  On the other hand, a Flt II, being significantly smaller than the large deck LHA/LHDs, might be quite useful in moving around and supporting small units.  Then again, the Flt II has very limited aviation capability which is a cornerstone of the forward base concept and the Marine’s recent push to become aviation-centric.  As I noted, without details about Berger’s plans, it is very difficult to pass judgment about the value of the Flt II in the new Marine concept.

If we take the Commandant at face value and assume that the Flt II is of limited value, it calls into question the reason for the entire Flt II program.  Should we immediately halt the program and move in a different direction?  Berger has suggested that the Marines will look to smaller, cheaper, more numerous vessels such as the JHSV or the Light Amphibious Warship (see, “Light Amphibious Warship Update”) for transport.  If that’s the case, we can build a lot of JHSVs for the cost of one Flt II and we should halt the Flt II program immediately.  At the very least, a pause in the LPD-17 program is warranted until the Commandant decides what ships he wants for his Navy.




_____________________________________

(1)Navy website,
http://www.navy.mil/navydata/fact_display.asp?cid=4200&tid=1000&ct=4

(2)Congressional Research Service, “Navy LPD-17 Flight II (LX[R]) Amphibious Ship Program: Background and Issues for Congress”, R43543, Ronald O’Rourke, 3-Jul-2018,
https://www.defensedaily.com/wp-content/uploads/post_attachment/202101.pdf

(3)Wikipedia, “LX(R)-Class Amphibious Warfare Ship”, retrieved 10-Oct-2019,
https://en.wikipedia.org/wiki/LX(R)-class_amphibious_warfare_ship

(4)Congressional Research Service, “Navy LPD-17 Flight II and LHA Amphibious Ship Programs: Background and Issues for Congress”, 10-Oct-2019

(5)Congressional Research Service, “Navy LPD-17 Flight II and LHA Amphibious Ship Programs: Background and Issues for Congress”, 22-Jul-2020