A.S. 25, 1921
Type: Lighter ;
Capacity : 180 tons.
Notes:

NL Jan 1921 based at Sheerness and operated by the Naval Stores Dept.

A.S. 27, 1921
Type: Lighter ;
Capacity : 180 tons.
Notes:

NL Jan 1921 based at Rosyth and operated by the Victualling Dept.

A.S. 28, 1921
Type: Lighter ;
Capacity : 180 tons.
Notes:

NL Jan 1921 based at Chatham and operated by the Naval Stores Dept.

A.S. 29, 1921
Type: Lighter ;
Capacity : 180 tons.
Notes:

NL Jan 1921 based at Chatham and operated by the Naval Stores Dept.

A.S. 33, 1921
Type: Lighter ;
Capacity : 180 tons.
Notes:

NL Jan 1921 based at Rosyth and operated by the Victualling Dept.

A.S. 34, 1921
Type: Lighter ;
Capacity : 180 tons.
Notes:

NL Jan 1921 based at Invergordon and operated by the Naval Stores Dept.

A.S. 40, 1921
Type: Lighter ;
Capacity : 180 tons.
Notes:

NL Jan 1921 based at Invergordon and operated by the Naval Stores Dept.

A.S. 41, 1921
Type: Lighter ;
Capacity : 180 tons.
Notes:

NL Jan 1921 based at Devonport and operated by the Naval Stores Dept.

A.S. 50, 1921
Type: Tug ;
Notes:

NL Jan 1921 based at Grimsby.

A.S. 136, 1921
Type: Tug ;
Notes:

NL Jan 1921 based at Brightlingsea.

A.S. 139, 1921
Type: Tug ;
Notes:

date unknown A.S. 139 renamed C 505.

NL Jan 1921 based at Rosyth.

A.S. 149 (T.T.S.), 1921
Type: Tug ;
Notes:

NL Jan 1921 based at Rosyth.

A.S. 309, 1921
Type: Tug ;
Notes:

NL Jan 1921 based at Humber.

A.S. 312 (T.T.3), 1921
Type: Tug ;
Notes:

NL Jan 1921 based at Rosyth.

A.S. 315, 1921
Type: Tug ;
Notes:

NL Jan 1921 based at Devonport.

A.S. 318, 1921
Type: Tug ;
Notes:

NL Jan 1921 based at Invergordon.

A.S. 323 (T.T.7), 1921
Type: Tug ;
Notes:

NL Jan 1921 based at Port Edgar.

A.S. 331 (T.T.2), 1921
Type: Tug ;
Notes:

NL Jan 1921 based at Rosyth.