Coastal aquaculture faces significant environmental challenges, prompting consideration of relocating mariculture activities further offshore, termed offshore aquaculture (OA). However, the associated risks and costs have impeded the OA's growth, underscoring the need for sound policy direction. Utilizing game models, we evaluate the advantages of various policy strategies and explore the complex dynamics between stakeholders, which enhances policymakers' decision-making abilities regarding the OA's evolution. Data-driven insights reveal that: 1) A lack of policy intervention in the OA can lead to fierce market competition and unequal resource distribution, adversely affecting societal prosperity. 2) Policies centered around direct government investment in OA system or subsidizing enterprise-led initiatives can paradoxically compromise both societal welfare and the OA's sustainable growth. 3) Our analysis shows that subsidizing OA product production and consumption effectively mitigates the constraints observed in the previously mentioned policies, promoting societal welfare, and expanding the OA sector. Additionally, this approach stimulates the maximum enterprise investment in OA system, even if other policies might seem more directly supportive. 4) Policy enactment often witnesses erratic strategies from decision-makers. Within this spectrum, OA enterprises are highly susceptible to strategic chaos, with government missteps having the gravest repercussions on market equilibrium. In summary, this paper examines the theoretical advantages and challenges of various policies, coupled with paying attention to the intricate interactions and potential chaos phenomena of decision-makers in different scenarios. These findings are then used to offer corresponding policy insights, thereby empowering policymakers to better guide OA development.

沿海水产养殖面临着严峻的环境挑战，促使人们考虑将海水养殖活动转移到离岸更远的地方，称为近海水产养殖（OA）。然而，相关的风险和成本阻碍了 OA 的增长，凸显了健全政策方向的必要性。利用博弈模型，我们评估各种政策策略的优势，并探索利益相关者之间的复杂动态，从而增强政策制定者对OA演化的决策能力。数据驱动的洞察表明：1）OA缺乏政策干预会导致激烈的市场竞争和不平等的资源分配，对社会繁荣产生不利影响。2) 以政府直接投资OA系统或补贴企业主导的举措为中心的政策可能会矛盾地损害社会福利和OA的可持续增长。3）我们的分析表明，对OA产品生产和消费进行补贴可以有效缓解上述政策中的限制，促进社会福利并扩大OA行业。此外，这种方法刺激了企业对OA系统的最大投资，即使其他政策可能看起来更直接支持。4) 政策制定过程中，决策者的策略常常不稳定。在这个范围内，OA企业极易受到战略混乱的影响，政府的失误对市场平衡造成最严重的影响。综上所述，本文探讨了各种政策的理论优势和挑战，同时关注不同情景下决策者错综复杂的相互作用和潜在的混沌现象。这些发现随后被用来提供相应的政策见解，从而使政策制定者能够更好地指导开放获取的发展。