Geography · Grade 10 · Global Governance and Geopolitics · Term 4

Maritime Boundaries and Law of the Sea

Students examine the geographic principles of maritime boundaries, exclusive economic zones, and the international law governing ocean resources.

About This Topic

Maritime boundaries establish legal divisions of ocean spaces, including territorial seas (12 nautical miles from baselines), contiguous zones (24 nautical miles), and exclusive economic zones (EEZs, 200 nautical miles) where coastal states hold rights to resources like fish and seabed minerals. The United Nations Convention on the Law of the Sea (UNCLOS, 1982) provides the framework, using principles such as equidistance lines adjusted for geographic equity. Students differentiate these zones and examine continental shelf extensions beyond 200 nautical miles.

This topic aligns with Ontario Grade 10 Geography's Global Governance and Geopolitics unit, where students analyze disputes driven by factors like overlapping claims, island positions, and resource scarcity. Examples include Canada's Arctic EEZ assertions and South China Sea tensions. Key skills involve evaluating UNCLOS enforcement through bodies like the International Tribunal for the Law of the Sea and assessing its role in sustainable ocean management.

Active learning benefits this topic greatly. Mapping exercises and negotiation simulations make abstract legal concepts concrete, as students physically draw boundaries and role-play disputes, revealing geographic influences and building skills in argumentation and compromise.

Key Questions

1. Differentiate between various types of maritime boundaries and their legal implications.
2. Analyze the geographic factors that lead to disputes over ocean resources.
3. Evaluate the effectiveness of the Law of the Sea in managing global ocean governance.

Learning Objectives

• Differentiate between territorial seas, contiguous zones, and exclusive economic zones (EEZs) based on their defined nautical mile limits and associated coastal state rights.
• Analyze the geographic factors, such as island location and continental shelf shape, that contribute to disputes over maritime boundaries and ocean resources.
• Evaluate the effectiveness of the United Nations Convention on the Law of the Sea (UNCLOS) in resolving international maritime boundary disputes and managing shared ocean resources.
• Compare the legal implications and resource rights associated with different types of maritime boundaries, including internal waters, territorial seas, and EEZs.

Before You Start

Map Skills and Projections

Why: Students need to understand how to read maps and interpret scale, including nautical miles, to accurately visualize and calculate maritime boundaries.

Sovereignty and International Relations

Why: Understanding the concept of national sovereignty is fundamental to grasping the rights and responsibilities associated with maritime zones.

Key Vocabulary

Territorial Sea	A belt of coastal waters extending up to 12 nautical miles from the baseline of a coastal state, over which the state has sovereignty.
Exclusive Economic Zone (EEZ)	An area extending 200 nautical miles from the baseline, in which a coastal state has sovereign rights for exploring, exploiting, conserving, and managing natural resources, both living and non-living.
Baseline	The line along the coast chosen as the starting point for measuring the seaward limits of territorial waters and other maritime zones.
UNCLOS	The United Nations Convention on the Law of the Sea, an international agreement that establishes a framework for maritime law, including boundary definitions and resource rights.
Continental Shelf	The submerged part of a continent that extends from the coastline into the ocean, which can extend beyond the 200-nautical-mile EEZ limit for resource rights.

Watch Out for These Misconceptions

Common Misconception

EEZs grant full ownership and sovereignty over all ocean areas within 200 nautical miles.

What to Teach Instead

EEZs provide economic rights to resources but allow innocent passage and high seas freedoms. Role-playing navigation scenarios in simulations helps students distinguish jurisdiction types and see why disputes arise over enforcement.

Common Misconception

Maritime boundaries follow straight lines regardless of geography.

What to Teach Instead

Boundaries adjust for coastal shapes, islands, and equity per UNCLOS Article 15. Hands-on mapping activities reveal how concave coasts or islands shift equidistance lines, correcting oversimplified views through peer discussion of real cases.

Common Misconception

UNCLOS resolves all ocean disputes automatically.

What to Teach Instead

It offers mechanisms but requires ratification and compliance; non-signatories like the US complicate matters. Debate simulations expose enforcement gaps, as students negotiate outcomes and reflect on voluntary adherence.

Active Learning Ideas

Mapping Activity: Plotting EEZs

Distribute world outline maps marked with coastal nations. Students measure and draw territorial seas, EEZs, and potential overlaps using string or rulers for scale. Groups compare maps and note dispute hotspots like the East China Sea.

45 min·Small Groups

Simulation Game: Boundary Negotiation

Assign groups roles as nations in a dispute, such as Canada versus Denmark over Hans Island waters. Provide UNCLOS excerpts; groups propose solutions, then rotate to debate and vote on equitable boundaries.

60 min·Small Groups

Jigsaw: Dispute Analysis

Divide class into expert groups on specific cases (Arctic, Spratly Islands). Each researches geographic factors and UNCLOS applications, then reforms into mixed groups to teach and evaluate resolution effectiveness.

50 min·Small Groups

Whole Class Debate: UNCLOS Effectiveness

Split class into proponents and critics of UNCLOS. Provide evidence packets on successes and failures; teams prepare 3-minute arguments, followed by moderated debate and class vote.

40 min·Whole Class

Real-World Connections

• Fisheries managers in coastal communities, such as those in Nova Scotia, use EEZ regulations to set quotas and prevent overfishing, ensuring the sustainability of local fish stocks like cod and lobster.
• Naval strategists and international law experts analyze maritime boundaries to understand freedom of navigation rights and potential conflict zones, as seen in ongoing discussions regarding passages in the Arctic or South China Sea.
• Oil and gas companies conduct geological surveys and apply for exploration rights within defined continental shelf areas, often navigating complex international agreements for offshore drilling projects.

Assessment Ideas

Exit Ticket

Provide students with a map showing a fictional coastline with several islands. Ask them to draw and label the territorial sea and EEZ for the main coastline and one island, explaining the different rights associated with each zone in one sentence each.

Quick Check

Present students with three scenarios describing maritime disputes (e.g., overlapping EEZ claims, fishing rights near an island). Ask them to identify which type of maritime boundary is most relevant to each dispute and briefly explain why.

Discussion Prompt

Facilitate a class discussion using the prompt: 'To what extent has UNCLOS been successful in preventing conflicts over ocean resources? Consider specific examples of successful resolutions or ongoing disputes.'

Frequently Asked Questions

What are the key types of maritime boundaries under UNCLOS?

UNCLOS defines territorial seas (up to 12 nautical miles, full sovereignty), contiguous zones (24 nautical miles, customs enforcement), EEZs (200 nautical miles, resource rights), and continental shelves (resource rights beyond EEZs). Students differentiate these by mapping overlaps, connecting to Canada's Arctic claims and global fisheries management.

How do geographic factors lead to maritime disputes?

Features like island chains, concave coastlines, and distant shelves create overlapping claims, as in the South China Sea where China's 'nine-dash line' conflicts with neighbors' EEZs. Analyzing bathymetry maps helps students see how resource-rich areas intensify tensions, informing evaluations of UNCLOS equity principles.

What active learning strategies work best for teaching maritime boundaries?

Simulations where students negotiate boundaries as nations build empathy for geopolitical challenges, while mapping EEZs on large charts visualizes overlaps. Jigsaw case studies distribute expertise, ensuring all grasp UNCLOS applications. These methods, lasting 40-60 minutes, foster collaboration and turn legal abstractions into memorable, skill-building experiences.

How effective is the Law of the Sea in managing ocean resources?

UNCLOS promotes sustainable use through EEZ resource rights and dispute tribunals, resolving cases like Bangladesh-Myanmar boundaries. Challenges persist with non-ratifiers and non-compliance, yet it underpins 90% of global trade routes. Students evaluate via debates, weighing successes against ongoing conflicts like Arctic melting claims.