Aggregation type, navigability, and end ownership are separate concepts, each with their own explicit notation. Association ends owned by classes are always navigable, while those owned by associations may be navigable or not.

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Association and Property - some cases
SysMLv1: Some invalid multiplicity examples with navigable and non-navigable Association ends. In Cameo Systems Modeler with validation.
Association and Property - some cases - with dot notation and ownership indicators
Source
Unified Modeling Language 2.5.1
Copyright information
About Object Management Group copyright in text extracts quoted from OMG specifications for educational purposes
Snippet kind
INFO
UML keywords
Association
Classifier
Property::isNavigable()
Association::navigableOwnedEnd
Association::ownedEnd
Association::memberEnd
Element::owner
AggregationKind
Property::aggregation
Navigability notation was often used in the past according to an informal convention, whereby non-navigable ends were assumed to be owned by the Association whereas navigable ends were assumed to be owned by the Classifier at the opposite end. DEPRECATED.
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Aggregation type, navigability, and end ownership are separate concepts, each with their own explicit notation. Association ends owned by classes are always navigable, while those owned by associations may be navigable or not.This convention is now deprecated.
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Ownership of Association ends by an associated Classifier may be indicated graphically by a small filled circle, which for brevity we will term a dot.
The dot is to be drawn integral to the graphic path of the line, at the point where it meets the Classifier, inserted between the end of the line and the side of the node representing the Classifier.
The dot shows that the model includes a Property of the type represented by the Classifier touched by the dot. This Property is owned by the Classifier at the other end.
Composite aggregation is a strong form of aggregation that requires a part object be included in at most one composite object at a time. If a composite object is deleted, all of its part instances that are objects are deleted with it.
A part may be shown by graphical nesting of a box symbol
A Port is a Property of an EncapsulatedClassifier that specifies a distinct interaction point between that EncapsulatedClassifier and its environment or between the Behavior of the EncapsulatedClassifier and its internal roles. Ports are connected by ...
A Port of an EncapsulatedClassifier is shown as a small square symbol. The Port symbol may be placed either overlapping the boundary of the rectangle symbol denoting that EncapsulatedClassifier or it may be shown inside the rectangle symbol.
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