The only references I find in my "library" are not too specific. Many photos of models of your era of interest seem to have the oars apparently scattered over the thwarts, and in black and white prints are indistinct as to color. In my opinion, a commercial ship was more likely to have oars painted than varnished (cheaper, more visible in low light levels), and would have them lashed neatly down, half the set on the port side of the thwarts or sheer-strake/gunwale, half on the starboard. Some other references may be helpful:
Oar-Making
The different parts of oars are described by the engraved figures, and their dimensions by the tables.Ships' sweeps and oars are made of hand-masts, or rafters, of suited to the size and length, as per table. They should be chosen straight-grained, free from large knots, shakes, or rind-galls. They are first sawed, or jambed in a snatch-block, and hewed nearly to their size; then raised on horses, and completed by the drawing-knife, spoke-shave, or plane. Open handles are nailed to the sides of the loom in the direction of the flat of the blade, made of oak, about one inch and three-quarters deep, and two inches and one-quarter thick, hollowed to admit the hand easy between that and the loom: the length of the handle is one-third the length of the loom.
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DIMENSIONS OF SHIPS' SWEEPS & OARS
Number of Guns Lengths Loom
(Square)Blade Handle Sweep Handle Loom Body or Shank Blade Broad Thick Diam.
ofInner End Outer End Inner End Outer End feet ft in ft in ft in ft in in in ft in in in in 100 52 2 - 2 19 - 6 13 - 0 17 - 3 6 3/4 6 1/2 1 - 1 6 1 5/8 1 3/4 98 to 90 50 2 - 2 18 - 9 12 - 6 16 - 9 6 1/2 6 1 - 0 5 3/4 1 5/8 1 3/4 80 to 74 48 2 - 2 18 - 0 12 - 0 16 - 0 6 1/4 5 3/4 0 - 11 3/4 5 3/8 1 5/8 1 3/4 64, 50 to 44 &; 38 46 2 - 0 17 - 6 11 - 6 15 - 3 6 5 1/2 0 - 11 1/2 5 1 1/2 1 ¾ 36 to 32 44 1 - 10 16 - 8 11 - 0 14 - 6 5 3/4 5 0 - 11 4 3/4 1 1/2 1 3/4 28 to 24 42 1 - 8 15 - 4 10 - 3 13 - 0 5 3/8 4 3/4 0 - 10 1/2 4 1/2 1 1/2 1 3/4 22 &; Sloops 40 1 - 8 14 - 2 9 - 6 12 - 6 5 4 1/2 0 - 10 4 1/8 1 1/4 1 3/4 40, 38 &; 36 - Oars 36 1 - 8 13 - 4 9 - 0 12 - 0 4 3/4 4 3/8 0 - 9 4 1 1/4 1 3/4 32 34 1 - 7 12 - 6 8 - 6 11 - 6 4 1/2 4 1/4 0 - 8 1/2 3 3/4 1 1/4 1 3/4 28 32 1 - 6 11 - 9 8 - 0 11 - 0 4 1/4 4 1/8 0 - 8 3 1/2 1 1/8 1 3/4 24 & 20 30 1 - 6 11 - 0 7 - 6 10 - 6 4 1/8 4 0 - 7 1/2 3 1/4 1 1/8 1 3/4 Sloops & Brigs 28 1 - 6 10 - 3 7 - 0 10 - 0 4 4 0 - 7 3 1/8 1 1 3/4 Barges', lighters', and ships' boats', oars are made of fir-rafters, similar to ships', without handles to the sides of the loom.
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DIMENSIONS OF OARS FOR BARGES, LIGHTERS & SHIPS' BOATS
1 The looms of boats' oars are often made round.
Breath of the Barge, Wherry, or Skiff Lengths Loom1
(square)Blade Handle Sweep Handle Loom Body or Shank Blade Broad Thick Diam.
ofInner End Outer End Inner End Outer End Tons feet ft in ft in ft in ft in in in in in in in 130 27 1 - 3 11 - 0 6 - 0 9 - 0 4 1/4 4 7 3 1/2 1 1 3/4 100 26 1 - 2 10 - 6 5 - 9 8 - 9 4 1/4 3 3/4 6 1/2 3 1/8 1 1 3/4 80 25 1 - 2 10 - 0 5 - 6 8 - 6 4 1/4 3 1/2 6 1/2 3 1 1 3/4 70 24 1 - 1 9 - 9 5 - 3 8 - 0 4 1/8 3 1/2 6 3/8 3 1 1 3/4 50 23 1 - 1 9 - 3 5 - 0 7 - 9 4 1/8 3 1/2 6 3/8 3 1 1 3/4 30 22 1 - 0 8 - 9 4 - 9 7 - 6 4 1/8 3 1/4 6 1/4 3 7/8 1 3/4 20 21 1 - 0 8 - 6 4 - 6 7 - 0 4 3 1/8 6 1/4 2 7/8 7/8 1 3/4 Boats, in breath:
Ft In7 - 0 20 0 - 10 6 - 0 6 - 10 6 - 4 4 3 1/8 6 1/8 2 7/8 7/8 1 3/4 6 - 0 19 0 - 10 5 - 0 7 - 2 6 - 0 3 7/8 3 6 2 3/4 7/8 1 3/4 5 - 0 18 0 - 10 4 - 0 7 - 6 5 - 8 3 7/8 3 6 2 3/4 7/8 1 3/4 4 - 6 17 0 - 10 3 - 6 7 - 4 5 - 4 3 3/4 2 7/8 5 3/4 2 5/8 7/8 1 1/2 4 - 0 16 0 - 10 3 - 0 7 - 2 5 - 0 3 1/2 2 3/4 5 3/4 2 1/2 3/4 1 1/2 Oars and sculls for barges, wherries, and skiffs, are made of ash (and sometimes of fir) rafters, which should be chosen tough, straight-grained, without shakes or large knots. The rough wood.is taken off with an axe, and finished in a neat manner on horses by drawing-knives, spoke-shaves, and planes. A leather button is nailed on the foreside, about two inches from the loom, and that edge rounded, to work easily in the rowlock: the lower end of the blade is strapped round with tin to prevent its splitting.
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DIMENSIONS OF OARS & SCULLS FOR BARGES, WHERRIES & SKIFFS
Breath of the Barge, Wherry, or Skiff Lengths Loom Blade Handle Sweep Handle Loom Body or Shank Blade Thick Thick Broad Thick Diam.
ofInner End Outer End Inner End Outer End Ft In feet ft in ft in ft in ft in in in in in in in in 5 9 20 0 - 11 4 - 6 8 - 11 5 - 8 4 4 1/2 2 1/2 6 1/2 3 3/4 3/4 1 5/8 5 6 19 0 - 11 4 - 4 8 - 5 5 - 4 3 3/4 4 1/4 2 1/4 6 1/4 3 3/4 1 5/8 5 0 18 0 - 10 4 - 0 8 - 0 5 - 0 3 1/2 4 2 6 2 3/4 3/4 1 5/8 4 9 17 0 - 10 3 - 10 7 - 7 4 - 8 3 1/4 3 3/4 1 3/4 5 7/8 2 1/2 5/8 1 5/8 4 6 16 0 - 10 3 - 6 7 - 4 4 - 4 3 3 1/2 1 1/2 5 3/4 2 3/8 1 2 1 5/8 4 3 15 0 - 10 3 - 3 7 - 0 4 - 0 2 3/4 3 1/4 1 3/8 5 1/2 2 1/4 1/2 1 5/8
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DIMENSIONS OF SCULLS FOR WHERRIES, SKIFFS &C.
Breath of the Barge, Wherry, or Skiff Lengths Loom Blade Handle Sweep Handle Loom Body or Shank Blade Thick Deep Broad Thick Diam. of Inner End Outer End Inner End Outer End Ft In feet ft in ft in ft in ft in in in in in in in in 5 6 14 0 - 4 1/2 2 - 4 7 - 9 3 - 6 3 3 1/2 2 5 1/2 2 1/4 1/2 1 3/4 5 3 13 0 - 4 1/2 2 - 2 7 - 2 3 - 3 2 3/4 3 1/4 1 7/8 5 3/8 2 1/4 1/2 1 3/4 4 9 12 0 - 4 2 - 0 6 - 8 3 - 0 2 1/2 3 1 3/4 5 1/4 2 1/8 1/2 1 3/4 4 6 11 0 - 4 1 - 11 6 - 0 2 - 9 2 1/4 2 3/4 1 5/8 5 1/8 2 1/8 1/2 1 3/4 4 3 10 0 - 4 1 - 9 5 - 5 2 - 6 2 1/8 2 5/8 1 1/2 5 2 3/8 1 3/4 4 0 9 0 3 1/2 1 - 7 4 - 10 2 - 3 2 2 1/2 1 3/8 4 3/4 2 3/8 1 3/4 N. B. Oars or Sculls made of fir exceed the dimensions in the above tables one-eight of an inch. The price of fir oars is seven shillings less than ash orars, and fir sculls three shillings and sixpence less than ash sculls.
There is no exact answer to your question. We can say that American whaleboats typically used 5 rowing oars of 3 different lengths, plus a longer steering oar. The rowing oars generally ranged between 14 and 18 feet, with the spread in a particular boat usually about 2' between the longest and shortest, for example: 16', 17' and 18' in one example, or 15,' 16', and 17' in another example. All the boats of a ship would probably be consistant, except the midship boat might be smaller, and thus it might also use shorter oars.
The oars in a boat (from bow to stern) might thus be as follows:
Harpooner (16', starboard side)
Bow (17', port side)
Midship (18', starboard side)
Tub (17', port side)
After (16', starboard side)
Steering oar (22')
The Model Shipways "New Bedford Whaleboat" kit, modeled after one of the whaleboats at the New Bedford Whaling Museum, matches this example. Oars listed in a bill for the bark Mermaid show essentially the same lengths, plus a few 15' oars, perhaps for smaller or less experienced oarsmen. - [Ronnberg]
Ansel [pg 61] notes oar lengths for boats found at several museums ...
(the figures are for the three sizes of rowing oars, plus the steering oar.)
Cold Spring Harbor Whaling Museum: 14' - 16' - 18' & 23'
Nantucket Whaling Museum: 12'.8" - 14'.6" - 15'1" & 19.7"
New Bedford Whaling Museum: 15' - 16' - 17' & 18'.2"
Mariners Museum: 15' - 16' - 17' & 21'.4"
and comments [pg 60] that ...
Ashley writes of oars of 17' - 17'.6" - 18', 15' - 16' - 17', and 16' -17' - 18',
with the steering oar from 20 to 23'
Brown lists 16' - 17' - 18' & 22'
Davis lists 14' - 16' - 18' & 22'
Ansel also notes [pg 60] that British whaleboats sometimes used shorter oars,
and that Scoresby writes they were 14' to 16', all the same length. Azorean
whaleboats, longer than American boats, used 6 oars, 2 each of 16', 17', and 18'.
{David Hill}
| Harpooner | Bow | Midship | Tub | After | Steering | |
| Spring Harbor Museum | 14' | 16' | 18' | 16' | 14' | 23' |
| Nantucket Museum | 12' 8" | 14' 6" | 15' 1" | 14' 6" | 12' 7" | 19' 7" |
| New Bedford Museum | 15' | 16' | 17' | 16' | 15' | 18' 2" |
| Beetle boat at Mariners Museum | 15' | 16' | 17' | 16' | 15' | 21' 4" |
| Steering oar | 22 feet |
| one stripe, harpooner | 16 feet |
| two stripes, bow | 17 feet |
| three stripes, midships | 18 feet |
| four stripes, tub | 17 feet |
| five stripes, stroke | 16 feet |
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