The term, ‘Sea Control’, is an oft cited phrase that is used to justify all manner of ships and operations. The problem with ‘Sea Control’, however, is that everyone who discusses it has a different idea of what it is. Is it any wonder, then, that no two ‘Sea Control’ discussions draw the same conclusions?
Note: This post is inspired by comments from many people, most recently reader ‘Lazarus’ who offered this comment that prompted me to think about ‘Sea Control’ definitions and what that might mean for ship/carrier designs.(2) My thanks to all of you!
Here’s a few of the more common definitions/descriptions of Sea Control (SC):
ASW – This view sees SC as more akin to an anti-submarine, hunter-killer function. It is an undersea, sea control concept and, as such depends on uncontested aerial dominance to be successful. This concept typically envisions a helo-centric carrier with a few fixed wing aircraft added in for supposed air supremacy. As a pure ASW task force, this has validity but the broader view of an ASW sea control group that also engages in other naval dominance activities is highly suspect given the lack of firepower.
Anti-Surface – This view envisions SC groups sweeping the oceans, looking for enemy naval forces and engaging them to eliminate the enemy’s navy. This concept typically envisions a converted amphibious ship operating a fixed wing group of 1-2 dozen AV-8/F-35B aircraft. Alternatively, a full Nimitz/Ford carrier has been mentioned as the SC element although this would seem to be simply a carrier task force.
Patrol – This view has the SC group ‘patrolling’ (whatever that means) around an area and presumably attacking whatever it comes across thereby establishing local dominance. There is a suggestion in most such descriptions that the SC group would operate around the periphery of a conflict which, in turn, suggests that the main function would be almost tantamount to blockading and would be largely focused on anti-merchant shipping. This concept typically envisions some kind of hybrid cruiser-carrier and requires total air control to be successful.
Convoy – This view envisions a small carrier operating as a convoy escort providing ASW and AAW protection. This concept typically envisions using a WWII escort type carrier.
Nebulous – This is, honestly, the most prevalent view and is characterized by a lack of any specifics beyond the vague notion of establishing some sort of local naval dominance. Proponents tend to be much more concerned with the type of sea control ship (usually a smaller, specialized carrier of some sort) rather than the actual use/mission.
SC enthusiasts have put forth ideas for ship designs and group compositions that cover a range of concepts including small, specialized escort carriers, dedicated ASW carriers, modified LHA amphibious ships, hybrid cruiser/carriers, and full size Nimitz/Fords. Quite a range! The range of ship concepts reflects the lack of a standardized definition of Sea Control and lack of a concrete mission/role.
How does the military define SC? From Joint Publication 3-32,
Sea control may include naval cooperation and guidance for shipping, protection of sea lines of communications, air lines of communications, blockades, embargoes against economic or military shipping, and maritime interception operations (MIO). (1)
Well, that’s not very helpful. That’s just a very vague definition of what a navy does and is much more focused on peacetime patrol operations than actual war.
Honestly, the only reasonable conclusion is that there is no such thing as sea control and that the phrase is just a buzzword used to justify someone’s idea of a hybrid carrier or small naval group – in other words, the phrase ‘sea control’ is used to describe equipment rather than a role or mission.
Well, before we give up on sea control, let’s give it some more thought.
If ‘sea control’ is legitimate then what are we controlling? Most of the sea, most of the time, is empty. There aren’t that many naval forces around. Even in the Pacific in WWII, how many actual naval battles were fought? Not that many. That suggests that having a standing sea control group patrolling around a given area is generally pointless.
Of the entire Pacific Ocean in WWII, how often was any given square mile of water occupied by an enemy vessel? I’d guess somewhere around 0.000000001% of the time. Again, that suggests that having a standing sea control group patrolling around a given area is generally pointless.
Consider the WWII naval battles that did occur. How many were a total surprise to both sides? I’m guessing around none. Given the highly predictable strategies on both sides and the intel from various sources (scouting, code breaking, coast watching, signal analysis, etc.), both sides were generally aware of where and when the other’s naval forces would appear. On those occasions, task forces were assembled and sent to engage but, of course, that’s a short, specific mission, not sea control, at least not as the term is being discussed here. Again, that suggests that having a standing sea control group patrolling around a given area is generally pointless.
Now, let’s consider the idea of a SC group lounging around some area in the general vicinity of, say, the first island chain during a war with China. Given the ranges of today’s various anti-ship weapons, the density of various ISR sources, and the presumed weakness of a sea control group’s AAW defenses, is it really safe/wise for a lightly armed group to be loitering around a war zone? There are many naval observers who doubt that even a full-fledged carrier group can survive in a modern war zone (they’re wrong but, I digress …). If that’s true, what chance would a SC group have of surviving long enough to be effective? Logically, then, a SC group would either have to operate so far from the active war zone as to be irrelevant or would be quickly detected and destroyed if operating near an active war zone.
Conclusion
Sea control, as a phrase, appears to be much like ‘littoral’ which was used to justify new ships for the Navy despite there not actually being any such thing as littoral naval requirements (see, “Littoral Warfare – Is There Such A Thing?”). The phrase ‘sea control’ has no useful, valid definition and has no specific mission associated with it. It is used to justify fanciful ship designs rather than describing a viable, bona fide mission or role. In fact, there does not appear to be any readily identifiable and relevant mission or role that we could label sea control. Further, historical evidence from WWII strongly suggests that there is no justification for a SC group regardless of what mission/role it would be attempting.
I just can’t give the concept any credence.
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(1)Joint Publication 3-32, “Joint Maritime Operations”, 16-Dec-2020





