Archaeology

British Columbia Shipwreck Recording Guide

E. Scantlings/Fastenings

Note: Scantling is a nautical term which refers to all dimensions given for a ship's timbers, planks etc. Timber dimensions are always distinguished by the terms "sided" and "moulded" rather than in non-nautical terms such as: width, thickness, or depth. Non-nautical terms can be ambiguous when used in a nautical context.

Figure 5 explains the major components of a wooden vessel (the same terms apply to metal construction) and illustrates how to take the dimensions required in this section.

In this section's Miscellaneous Comments the recorder should include observations pertaining to scantling dimensions that are not recorded in E1-E12, or for responses which require more space than has been provided there.

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** E1. Keel Dimensions

Note the sided/moulded/length dimensions of the keel and the number of component timbers. State whether the keel is a bar, continuous vertical, or intercoastal keel type, if it is iron (see glossary: keel); otherwise, note the wood species if possible.

Example: S .33 M .44 L 12.5; one-piece oak

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** E2. Keelson Dimensions

Provide the sided/moulded/length dimensions of the keelson. If the keelson is built up with several timbers, note and give overall sided and moulded dimensions. Note whether the keelson section is a simple "I", flat plate, or box section type if it is iron (see glossary: keelson); otherwise, note the wood species if possible.

Example: S 1.15 M .89 L 14.0; three-piece elm.

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** E3. Mast Step Dimensions

List the dimensions and description of the mast step(s) (typically a mortise in the keelson with an iron insert). For multiple mast steps, the data should begin with the most forward mast step and work aft.

Example: .050 x .030, keelson mortise with iron step collar .40 x .40 inside dim.

Scantlings/Fasteners
Figure 5. Scantlings/Fastenings (after McKee, 1983)

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** E4. Stem

List the sided/moulded/length of the stem and note number of timbers in stem assembly, if possible.

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E5. Stern Post

List the sided/moulded/length and note the number of timbers in the stern post assembly, if possible.

Note: Include non-dimensional information on stem and stern posts under Post Notes.

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E6. Floor Timbers

Give the sided/moulded dimensions of a typical floor timber.

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E7. Timber and Space

List the average timber (sided dimension of the framing timber) and space (distance between two adjacent framing timbers) combined as one dimension. Take this measurement as close to amidships as possible so as to avoid cant frame areas.

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** E8. Engine Mounts

The engine mount dimensions in terms of the length and width spanning main engine mounting points.

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** E9. Ceiling

Give the thickness of the ceiling planks (see glossary).

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E10. Hull Planking

Give the typical thickness of the planking or plating, measured at the lowest possible point on the hull.

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** E11. Hull Fastenings

Note the presence (number, if applicable) and material of various forms of fastenings (i.e.: nails, treenails, bolts, welds, rivets, etc.) and sample of dimensions if possible. Note the general location of the fastenings on the wreck site.

Example: 5 iron rivets (.025 x 1.20+) show in stern deadwood; several treenails visible in portside frames; copper sheathing tacks (.025 long) common; etc.

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** E12. Knees

Provide a sample list of knees visible on site (see glossary: knees). Include material and arm lengths. Note location of the finds on the wreck. List the type of knees, if known.

Example: 8 oak hanging knees remain along port side, 1.2 x 1.26 av; 1 isolated iron knee (possibly lodging) amidships, .38 x .3+;

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--Miscellaneous Comments

Use this part of the form to carry over or add information pertaining to the Scantlings/Fastenings fields. If a field is carried over enter information preceded by the field number, eg. E8:........etc.

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