The fonds consists mainly of documents pertaining to naval engineering (electrical, mechanical and nuclear), naval architecture (shipbuilding), naval sciences, naval ordnance, naval warfare, naval weapons and navigation.
There are 49 series:
I. In-House Classification
II. Bureau of Ordnance (OD documents)
III. Bureau of Ordnance (OP documents)
IV. Ordnance Alterations (ORDALT documents)
V. Ordnance Supply Office (OSA) Documents
VI. Naval Ordnance (NAVORD) Forms, Instructions and Reports
VII. Bureau of Weapons (BUWEPS) Instructions
VIII. Director General Fighting Equipment (DGFE) Technical Notes
IX. DGES [Director General Engineering (Sea)] and DG Sea Eng [Director General Sea Engineering] Technical Notes
X. Naval Ammunition Depot (NAD) Crane Instructions
XI. NAVWEPS [Naval Weapons] Documents
XII. NATMAT [Naval Material] Document
XIII. NAVSHIPS Publications
XIV. BRCNs [Books of Reference for the Canadian Navy]
XV. BRs [Books of Reference]
XVI. M74 to M91 Publications
XVII. MA to MS Publications
XVIII. NAVORD Reports
XIX. NAVWEPS Reports
XX. Electronics Information Bulletins
XXI. Naval Ordnance Bulletins
XXII. The ONI Review
XXIII. Monthly Intelligence Reports
XXIV. Rudtorpe Digest
XXV. NEDIT Memoranda
XXVI. NEDIT Reports
XXVII. YARD Reports
XXVIII. YE Reports
XXIX. YEAD 1 Reports
XXX. Maritime Systems Engineering and Management Study
XXXI. FHE 400 Engineering Design Study Report
XXXII. OPNAV Instructions
XXXIII. NAVWEPS ORDALTS
XXXIV. Close Range Missile System Study
XXXV. CBM Documents
XXXVI. TARTAR Documents
XXXVII. Defence Research Establishment Ottawa Technical Notes
XXXVIII. Defence Research Establishment Ottawa Reports
XXXIX. American Institute of Aeronautics and Astronautics / Society of Naval Architects and Marine Engineers Papers
XL. International Electrotechnical Commission Publications
XLI. American Society of Mechanical Engineers Publications
XLII. American Institute of Aeronautics and Astronautics Papers
XLIII. Bureau of Naval Personnel NAVPERS Publications
XLIV. Office Files
XLV. Miscellaneous Files
XLVI. CDM Documents
XLVII. Director General Maritime Engineering and Maintenance Files
XLVIII. In-House Classification (2)
XLIX. T-Documents