Navy’s Unwanted Sea Base Ship Will Test At-Sea Rearming Of Destroyer
Rearming U.S. Navy warships at sea might be a new mission for its pair of Montford Point class expeditionary transfer dock ships, which it acquired between 2013 and 2014. Four years ago, the service had tried to inactivate these floating logistics nodes, which are unlike anything else in its inventory today, but was blocked by Congress. At that time, TWZ noted that this was a curious decision, given the relatively young age of the ships and their adaptability to supporting new concepts of operations.
The Navy is seeking just over $177.7 million for what is blandly titled “Shipboard Crane Systems/Shipboard Cargo Systems” in its budget request for the 2027 Fiscal Year, which was rolled out last month. This money would go, in part, to completing a demonstration of an At-Sea Reload of Vertical Launch System (ASRV) capability on the USNS Montford Point, also known by its hull number ESD-1, according to the service’s budget documents. No mention is made of any plans to utilize the second ship in the class, USNS John Glenn (ESD-2), as part of this work.
USNS Montford Point, the Navy’s newest afloat forward-staging base
The documents say this same line item would also fund continuing “investigation and demonstration of shipboard crane/cargo system improvements including T-AKE [Lewis and Clark class dry cargo and ammunition ship] Expeditionary Reload and MK 41 Strike Up/Strike Down System.” It would support the initiation of “Naval Strike Missile and MK 48 torpedo reloading system improvements efforts” and the start of a “Mobile Supply Platform (MOSUP) demonstration effort,” as well.
In the current physical year, the Navy also plans to “continue investigation and demonstration of shipboard crane/cargo system improvements including Vertical Launch System (VLS) Rearming and transfer capabilities,” and “initiate design and fabrication for At-Sea Reload of VLS (ASRV) demonstration on ESD-1.”
The budget documents do not provide any further details about the ASRV capability beyond that it will offer a “cost-effective Vertical Launch System (VLS) rearm at-sea solution that will be fully compatible with all CRUDES and Allied/Partner Mk41 equipped vessels.” CRUDES here stands for “Cruiser-Destroyer,” and is a collective term for the Navy’s Ticonderoga class cruisers and Arleigh Burke class destroyers. Whether ASRV is related in any way to the Transferrable Reload At-sea Method (TRAM) that has already been tested in conjunction with Lewis and Clark class ships is unclear.

With 25,000 square feet of open main deck area, the semi-submersible Montford Point class design, derived from the Alaska class oil tanker, is ideally suited to hosting outsized items. They were also designed from the start to conduct operations involving the transfer of cargo from ships sitting alongside. As an aside, it is worth noting that the Montford Point and John Glenn are cousins of the Lewis B. Puller class of Expeditionary Sea Base (ESB) ships.
CNO Talks About the Mobile Landing Platform
In their primary “transfer dock” configuration, the ESDs act as floating self-propelled piers through which materiel and personnel can move from cargo ships to shore via ‘connectors’ like Landing Craft Air Cushion (LCAC) hovercrafts. They have special docking lanes that allow up to three LCACs to load and/or unload at a time. Amphibious vehicles can also drive right off into the sea and head for shore.


It is worth noting that the Navy’s stated plan now is simply to demonstrate the ASRV capability on Montford Point. At the same time, with all of the above in mind, it is not hard to see the ESDs acting as at-sea reloading nodes operationally in the future. The core transfer dock design could even potentially allow them to offload munitions from one ship on one side, like a member of the Lewis and Clark class, and then load them right into waiting VLS cells on a destroyer or cruiser sitting on the opposite side. They could also help transfer munitions to a separate pier for loading onto ships in need of rearming.

As it stands now, the Navy still has no real capacity to conduct at-sea rearming of VLS arrays on its warships. The service’s Emory S. Land class submarine tenders do have the ability to load missiles and torpedoes onto submarines at sea, but there are only two of these ships in the fleet today, something we will come back to later on. All of this, in turn, creates operational challenges that have become increasingly glaring in recent years.

At the Surface Navy Association’s main annual conference last year, Navy officials disclosed that warships supporting operations in and around the Red Sea had to leave their stations for up to two weeks to rearm in friendly ports. The distances and transit times involved could be much greater in future conflicts, especially in a future fight in the Pacific region against China. In the context of a high-end fight against a major adversary, friendly port facilities might not be readily available at all. Having to sit in an established port waiting for more munitions presents vulnerabilities of its own. A ship in need of rearming is also inherently one with a depleted magazine with which to defend itself, wherever it might be, in the interim.
At-sea reloading, whether it be from an ESD, a Lewis and Clark class cargo ship, or some other platform, would help Navy warships keep up a more persistent forward presence during sustained operations and reduce their vulnerability. There would still be risks entailed, especially if the ships have to be at anchor during rearming operations. The Navy is fully aware that an adversary like China would contest its logistics chains, in general, well into rear areas in any future major conflict.

There is also a capacity question. Making rearming at sea a more routine affair will require tasking ships to perform those duties, which can only increase the operational demands on the Navy’s existing combat support fleets. As mentioned, the Navy budget documents do show plans to work on expanding at-sea reloading capability on its 14 Lewis and Clark class ships, which are already heavily taxed conducting existing at-sea replenishment activities. They would also be high-priority targets in a major conflict. Recent operations against Iran have underscored threats to existing maritime logistics concepts, which would be far more pronounced in a high-end fight.
Making use of other existing auxiliaries in the at-sea rearming role could help address the capacity question, but there are limits there, too. The Navy only has two ESDs, and while it has backed off from its previous push to inactivate them, they are both currently on reduced operating status, which increases the time it takes to get them ready for deployment.
There is also the mention of demonstrating a “Mobile Supply Platform (MOSUP)” in the Navy’s latest budget request. What this might entail is not entirely clear, but it might point to interest in a new class of auxiliaries.
In terms of additional auxiliaries, the Navy is looking to finally order two new submarine tenders, currently referred to as AS(X), in Fiscal Year 2027, but to replace the aging Emory S. Land class ships. Since January, General Dynamics NASSCO, the shipbuilder behind the new tender design, has been pitching a companion vessel optimized for at-sea arming of surface warships, which it calls AD(X). The Navy has yet to show any formal interest in the AD(X) concept, at least that we are aware of at the time of writing.

Gibbs and Cox, a division of Leidos, has also previously put forward a concept involving repurposing semi-submersible oil rigs as forward logistic nodes, as well as missile defense platforms and sea bases.
Gibbs & Cox MODEP concept at SNA 2025
What is clear now is that the Navy is continuing to explore options for fielding sorely needed at-sea reloading capabilities, which are set to be ever-more critical for supporting future operations. An operational role in all this for the highly flexible and adaptable Montford Point class ships increasingly looks to be on the horizon.
Contact the author: joe@twz.com






















