The workhorses of the Combat Logistics Force—high-tempo, high-pay platforms keeping carrier strike groups fueled and supplied worldwide. Only two remain in active service.
Despite their age, MSC T-AOE vessels remain workhorses. Originally owned and operated by the Navy, these ships came under MSC control in the early 2000s. Today, only two operational AOEs are left in the fleet: the USNS Supply (T-AOE 6) and the USNS Arctic (T-AOE 8). Both ships were launched in the 1990s and show signs of wear and tear.
Designated as fast combat support ships, T-AOEs can keep pace with aircraft carriers and support an entire strike group. They combine the cargo capacity of T-AKEs and the fuel capacity of T-AOs, making them capable of resupplying an entire strike group on their own.
While they don't carry as much cargo as T-AKEs, they hold more fuel than T-AOs and are significantly faster than both. Aircraft carriers favor deploying with these vessels for their efficiency in delivering stores and fuel while maintaining a fast pace.
Why aren't more being built? Cost. T-AOEs are powered by gas turbine engines, and it takes a lot of fuel to propel a 750+ foot ship at over 25 knots.
If you are assigned to an AOE on deployment, expect to be busy. These ships are worked hard but offer a great platform to gain extensive UNREP experience quickly. It's a unique opportunity—with only two operational AOEs, you'll gain valuable experience and good pay, though it comes with hard work.
Some crew members have been stationed on these ships for years, developing a strong attachment reminiscent of the old Navy specs. This almost cult-like attraction among veterans can be comforting for those who remember the USNS Bridge, the USNS Rainer, and the older AFS ammo ships.
Typically deploys with 2 VERTREP-capable MH-60 helicopters
100–160 personnel
The main mission of the T-AOE is to provide cargo to the United States and allied navies at sea. The Combat Logistics Force (CLF) is a crucial component of the U.S. Navy, delivering essential logistical support that ensures the Navy's global reach, operational readiness, and mission effectiveness.
By facilitating underway replenishment operations, CLF vessels supply fuel, ammunition, food, and other critical resources to naval forces at sea, enabling them to sustain operations far from home ports and logistical infrastructure.
This capability enhances operational continuity by reducing the need for frequent port visits and extends the Navy's ability to project power and influence across multiple maritime domains. Whether conducting combat operations, training exercises, humanitarian assistance, or disaster relief missions, the CLF fleet ensures naval forces remain well-equipped and mission-ready.
Bottom line: Without CLF vessels like T-AOEs, the Navy's ability to sustain naval forces at sea would be severely limited, hindering their ability to safeguard national security interests on a global scale.
Underway replenishments (UNREPs) are how sustaining materials are transferred at sea. T-AOEs excel at two types of transfers:
Vessels maneuver alongside each other, maintaining precise distance. Rig crews transfer fuel hoses and cargo lines, then supplies move "over the wire"—fuel, ammunition, food, spare parts. T-AOEs provide both jet fuel and dry cargo to carriers and supporting ships.
Aircraft carriers receive around 2 million gallons of jet fuel per week for flight operations. AOEs often have two vessels alongside simultaneously—a carrier to port and a smaller ship to starboard.
Helicopters transfer supplies when ships can't come alongside. Pallets are lifted from one ship to another. The helicopter hovers over the receiving vessel's deck, drops the material, and repeats.
Impressive sight: Seeing an AOE operating at full capacity with two vessels alongside and conducting a VERTREP is truly remarkable. If you're on the main deck, stay alert—forklifts will be zipping around!
Over time, you'll get into a rhythm of seeing and resupplying a group of Navy ships. You'll start to notice patterns and judge your customers. Some ships are smooth sailing, and the UNREPs go well—often ending with the customer ship sending UNREP cookies as a sign of goodwill. Other customers are less coordinated and don't send any treats!
UNREPs are a delicate dance between ships in the middle of the ocean, supporting America's interests. They are truly a sight to see!
If you are new to MSC and want to learn more, check out the other articles on CIVSail.com. If you're an MSC veteran with a good UNREP story, shoot us an email—we would love to share it!
Information based on current T-AOE operations and sailor experiences
Deployment schedules and operations may vary based on fleet requirements
