maritimeInfrastructure

Given a predicate that represents a relationship or action between entities, generate a one-sentence description explaining its meaning.  
# Instructions
Focus on describing the relationship, not the entities themselves. 
# Response Format
Begin the description with \' Indicates...\'

Predicate: maritimeInfrastructure

Indicates the existence, presence, or involvement of facilities, structures, or systems that support maritime activities such as shipping, ports, and coastal operations between the related entities.