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6.4 Sea Control <strong>and</strong> Sea Denial 343<br />
Regardless <strong>of</strong> where a naval confrontation takes place, sea control must always be an aiming<br />
point for navies. 344 As Till has argued, sea control “confers tremendous benefits”, for in its<br />
acquisition <strong>and</strong> exercise it allows a navy to carry out an operation without serious challenge from<br />
an opponent. 345 Sea control is <strong>the</strong> ability to control a defined area <strong>of</strong> <strong>the</strong> sea that is operationally<br />
significant, <strong>and</strong> <strong>the</strong>reby ensure freedom <strong>of</strong> action through operational manoeuvre to undertake a<br />
variety <strong>of</strong> duties. 346 For traditional maritime <strong>Power</strong>s (e.g., US, UK <strong>and</strong> France), this includes<br />
gaining access to a <strong>the</strong>atre <strong>of</strong> operations; protecting SLOCs; projecting power ashore;<br />
contributing to l<strong>and</strong> operations, <strong>and</strong>; establishing a sea-base to support follow-on forces. 347 For<br />
o<strong>the</strong>r countries, pursuit <strong>of</strong> sea control while involving fewer resources might be equally intended<br />
to maximize strategic advantage, from asserting sovereignty to domination <strong>of</strong> a strategic<br />
waterway to making an effective (i.e., positive) contribution to a coalition force. In <strong>the</strong> open<br />
ocean, sea control is pursued in a mobile setting. In <strong>the</strong> littorals, it is fixed geographically <strong>and</strong> is<br />
potentially more complex, with threats emanating from air, l<strong>and</strong> as well as on <strong>and</strong> under <strong>the</strong> sea,<br />
from cyber <strong>and</strong> space, <strong>and</strong> from state <strong>and</strong> increasingly non-state actors. In all cases, projecting<br />
power using naval platforms requires <strong>the</strong> ability to protect (using ship-based sensors <strong>and</strong><br />
weapons) <strong>and</strong> to sustain those assets, <strong>and</strong> those <strong>the</strong>y are escorting—a core concern in joint<br />
operations—both as <strong>the</strong>y transit to where <strong>the</strong>y are needed <strong>and</strong> when in <strong>the</strong>atre.<br />
Whenever it is sought, sea control will face adversaries seeking to achieve <strong>the</strong> same aim or to<br />
prevent its acquisition by ano<strong>the</strong>r. Sea denial 348 has sometimes led to <strong>the</strong> construction <strong>of</strong> large<br />
battle fleets (<strong>the</strong> USSR), but most <strong>of</strong>ten <strong>the</strong> approach has been asymmetric (modern day Iran).<br />
Generally speaking, when a navy is not powerful enough to confront its adversary, it will <strong>of</strong>ten<br />
attempt “delay, disruption, denial <strong>and</strong> demoralisation” in an effort to persuade a more powerful<br />
opponent to ab<strong>and</strong>on its operation. 349 It is generally believed that this is <strong>the</strong> thinking today in<br />
countries, such as Iran <strong>and</strong> China, <strong>and</strong> it is <strong>the</strong> rationale behind <strong>the</strong> US concepts for overcoming<br />
modern anti-access strategies. 350 But, <strong>of</strong> course, any effort to counter an anti-access strategy must<br />
be dynamic, for sea denial is nei<strong>the</strong>r static nor is it fixed geographically. China’s naval buildup is<br />
gradually exp<strong>and</strong>ing <strong>the</strong> maximum distance <strong>of</strong> possible operations for <strong>the</strong> PLA(N) to more than<br />
343 This section benefited from ideas <strong>and</strong> concepts found in Milan Vego, Operation Warfare at Sea<br />
(Routledge: New York, 2008) <strong>and</strong> Ge<strong>of</strong>frey Till, Seapower, Third Edition (Routledge: New York, 2013).<br />
344 Canada’s Defence Terminology Bank (Record 18990) defines sea control as “[t]he condition that exists<br />
when one has freedom <strong>of</strong> action within an area <strong>of</strong> <strong>the</strong> sea for one’s own purposes for a period <strong>of</strong> time in <strong>the</strong><br />
subsurface, surface <strong>and</strong> above water environments.”<br />
345 Till, Seapower at <strong>the</strong> Millennium, p. 2.<br />
346 Milan Vego, Operational Warfare at Sea (Routledge: London, 2009), p. 30.<br />
347 Horizon 2050: A Strategic <strong>Maritime</strong> Concept for <strong>the</strong> Canadian Forces, p. 26.<br />
348 <strong>The</strong> Defence Terminology Bank (Record 18986) defines sea denial as “[p]reventing an adversary from<br />
controlling a maritime area without being able to control that area oneself.”<br />
349 Robert C. Rubel, “Talking About Sea Control”, <strong>Naval</strong> War College Review, Vol. 63, No. 4,<br />
Autumn 2010, p. 41.<br />
350 For an overview, see Andrew Krepinevich, Why AirSea Battle? (Center for Strategic <strong>and</strong> Budgetary<br />
Analysis: Washington, D.C., 2010), pp. 13–26 <strong>and</strong> General Norton A Schwartz <strong>and</strong><br />
Admiral Jonathon W. Greenert, “Air-Sea Battle”, <strong>The</strong> American Interest, 20 February 2012 [accessed on<br />
21 February 2012 at www.<strong>the</strong>-american-interest.com/article.cfm?piece=1212]. See also Sam J. Tangredi,<br />
Anti-Access Warfare: Countering A2/AD Strategies (<strong>Naval</strong> Institute Press: Annapolis, 2013).<br />
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