I decided that with the pier’s design set – I needed cleats to snug up any boat/barge alongside.

from – Planning and Design Guidelines for Small Craft Harbors pg. 206 – 1994. The recent publication reflects current practice and can be considered a ‘guide’ for older piers I should think.

Cleats should be (…) through-bolted into the structural frame. Do not use lag screws or other type screws. Bolt heads should be recessed so lines do not chafe over them. All parts of a cleat should be smooth with large radius and have ample room for two to four wraps of line around them. In many instances, two lines are wrapped around one cleat and there must be room to hold these lines with at least two wraps.

NYDDcleatfrom – Wharves and piers: their design, construction, and equipment pg. 188 pub 1917

Cleats of the pattern shown in Fig. 126 are used for lighters, tugs, etc. They are also used as fair-leades in connection with corner mooring posts.

NYDDcleatDimHere’s that cleat dimensioned with full-scale and O scale dimensions.
NYDDwGordonHere’s a look at the cleat with Gordon for a size comparison.

Have to think about this. The text indicates that this cleat was used for “lighters, tugs, etc.” … and makes the bollards I made too small dang it!

I had to look up “lighter”. The Encyclopaedia Britannica says – shallow-draft boat or barge, usually flat-bottomed, used in unloading (lightening) or loading ships offshore. Use of lighters requires extra handling and thus extra time and expense and is largely confined to ports without enough traffic to justify construction of piers or wharves. Lighters are also used in transporting freight for short distances, as around harbours.

This sounds about right for this little pier.

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