World Canals – Length comparison\nWhich of the following is the longest ship canal in the world by continuous man-made canal length?

Introduction / Context:
Ship canals are human-made waterways that enable ocean-going vessels to traverse between seas or across narrow isthmuses. Examinations often ask which is longest as a single, continuous canal rather than a system of natural lakes and modified channels.

Given Data / Assumptions:

• Suez Canal: a single sea-level canal linking the Mediterranean and Red Sea; length roughly 190+ km.
• Panama Canal: lock canal across the Isthmus of Panama; about 80+ km.
• Kiel Canal: links the North Sea and Baltic Sea; about 90–100 km.
• St. Lawrence Seaway: a system of channels, locks, and lakes, not a single canal of equal length.

Concept / Approach:
When the question refers to “longest ship canal,” standard general-knowledge sources treat the Suez Canal as the longest single man-made ship canal. The St. Lawrence Seaway is an extended route that includes natural water bodies, so it is not usually counted as one continuous canal length.

Step-by-Step Solution:
Compare individual canal lengths: Suez > Kiel & Panama.Exclude seaway system as not a single canal.Select “Suez canal, Egypt”.

Verification / Alternative check:
Look up approximate lengths: Suez ~193 km; Kiel ~98 km; Panama ~82 km. This ranking supports Suez as the longest continuous ship canal.

Why Other Options Are Wrong:

• St. Laurence Seaway: multi-segment system; not one canal.
• Kiel canal: shorter than Suez.
• Panama canal: shorter and lock-type.

Common Pitfalls:
Confusing “seaway route length” with “single canal length.”

Final Answer:
Suez canal, Egypt