Wikidata:WikiProject Ships/Classification

WikiProject Ships

Ship classification

Ship properties

Maintenance lists

Some simple definitions to help distinguish terms used to categorize means of transportation that use water:

Top-level class for any type of vehicle navigating over or under water.
This item should only be used with subclass of (P279) to define more specialized types of vehicles.
List of first-level watercraft specializations / Top 2 subclass levels

Top-level classes for any type of vehicle navigating over water. Subclasses of watercraft (Q1229765).
Ships are larger vessels, generally able to travel long distances with no resupply with a large crew. A vessel of over 500 tons displacement is almost invariably a ship.
These item should only be used with subclass of (P279) to define more specialized types of vehicles.
Ship subclasses: Top level types / Top 2 levels / Full hierarchy of ship types and classes
Boat subclasses: Top level types / Top 2 levels / Full hierarchy of boat types and classes

Top-level classes for any type of underwater vehicle (Q19623198). Subclasses of watercraft (Q1229765).
Submarines are larger vessels.
These item should only be used with subclass of (P279) to define more specialized types of vehicles.
Underwater vehicle types: Top level / Top 2 levels / Full hierarchy of underwater vehicles

An individual ship (Q11446) is an instance of (P31) a ship type (Q2235308),
and may have a vessel class (P289) of a ship class (Q559026).
An individual boat (Q35872) is an instance of (P31) a boat type (Q16103215),
and may have a vessel class (P289) of a boat class (Q121289722).
An individual submarine (Q2811) is an instance of (P31) a submarine type (Q121289744),
and may have a vessel class (P289) of a submarine class (Q1428357).
A ship type (Q2235308) is a subclass of (P279) ship (Q11446) or any other ship type.
A boat type (Q16103215) is a subclass of (P279) boat (Q35872) or any other boat type.
A submarine type (Q121289744) is a subclass of (P279) submarine (Q2811) or any other submarine type.
A ship class (Q559026) is a subclass of (P279) a ship type or any other ship class.
A boat class (Q121289722) is a subclass of (P279) a boat type or any other boat class.
A submarine class (Q1428357) is a subclass of (P279) a submarine type or any other submarine class.

Titanic (Q25173) is instance of (P31) ship type passenger vessel (Q2055880) (that is a subclass of (P279) ship);
USS YP-389 (Q185953) is instance of (P31) boat type patrol vessel (Q331795);
U-96 (Q708124) is instance of (P31) submarine type U-boat (Q428661) and has vessel class (P289) German Type VIIC submarine (Q10374571);
German Type VIIC submarine (Q10374571) is instance of (P31) submarine class (Q1428357) and subclass of (P279) Type VII submarine (Q167991);
Type VII submarine (Q167991) is instance of (P31) submarine class (Q1428357) and subclass of (P279) U-boat (Q428661);
U-boat (Q428661) is instance of (P31) submarine type (Q121289744) and subclass of (P279) submarine (Q2811).