Spedden Shipbuilding started in the early 1890s as R. M. Spedden Company.  Its shipyard was in the Fells Point neighborhood of Baltimore, at 1707 Thames Street, right at the foot of South Broadway and to the east: its office address was 913 South Broadway.  It was incorporated as Spedden Shipbuilding Company in 1898 and operated through World War II.  After the war, it became Wills-Spedden Shipyard, Inc., and in 1950 was sold to the Chesapeake Marine Railway Company.  See it from the air on Google here.  If anybody can add to the table below, please e-mail timcolton@aol.com.

Hull #	O.N.	Name	Customer	Type	GT	Feet	Built	Disposition
Built by R. M. Spedden Company
	92553	Maude H.		Tug	74	73	1893	To CoE 1903 as General Abbot, later Marengo
	136368	Elsie	Baltimore Steam Packet Co.	Tug	40	58	1893
	157436	Defender		Tug	88	85	1895
		Guthrie	U.S. Revenue Service	Cutter	149d	87	1895	To USN 1942 as YHT 7, sold 1947
		Vidette	US Army CoE	Tug	99	99	1898
	100651	Isabella T. Dempsey		Tug		90	1898	To CoE 1899 as  Gen. A. A. Humphreys, later Tunica
	130801	Neptune		Tug.	117	94	1898	Later Neptune III.  Active
	96391	Solicitor		Tug	19	50	1898
	116867	Scandinavia		Tug	55	70	1898
		Anita		Tug			1898
		Curtin		Tug			1898
		Joseph M Clark	J M Clark & Co	Tug	93d	86	1899	(1917-1918 USN  (SP/ID 1244)
	107550	Aguirre	M. Mendia		41	69	1900
		Oscar G. Murray		Tug	165		1900
Built by Spedden Shipbuilding Company
		John K. Cowen	Baltimore & Ohio RR Co.	Tug	160		1900
		LV 73 (Pollock Rip Shoals)	U.S. Coast Guard	Light Vessel	693d	124	1901	Later WAL 503. Lost with all hands in a hurricane in 1944
		Mackinac (CG 10)	U.S.Revenue Service	Boarding Boat/Tug	240d	110	1903	Later USCG and served in Navy in WWI, decommissioned 1939. Later Patricia, William T Moore, George J Murphy. Deleted 1977
		Juniper	U.S. Coast Guard	Inland Tender	146d	95	1903	Sold 1932 as cargo vessel, later tanker Aubrey L. Hudgins. Existence in doubt 1985
		Fireproofer	National Fireproofing	Tug	173		1903	Later Wm. J
206		Winnisimmet	U.S.Revenue Service	Tug	120	96	1903	Later USN, USCG (CG 9, WYT 84) . Sold 1946 as Sophia, then Bullhead, David C Winslow. Sunk 1991?
207		Wissahickon	U.S. Revenue Service	Tug	120	96	1904	To PoNY 1923, sold 1936 as Atlas. Deleted c1980
	200713	Continental		Tug	196	109	1904	Later R. M. Woodward (US Public Health Service), Neptune (US Army in WW2), Wedell Foss, Maggie F. Existence in doubt 1991
		Robert H. Smith	American Towing	Tug	227		1906	To Panama Canal as Porto Bello, Sold c1928
	164617	Argo	Independent Pier Co.	Covered Lighter	853	130	1911
	208275	Neptune	Curtis Bay Towing Co.	Tug	237	121	1911	To US Army as San Luis, later Neptune, J. F. Carroll, Jr.
	208633	Waldo Newcomer	Edwards Co.	Trawler	338	143	1911	Later Toltec 1916, Batareynyi 1917, Pomor 1925, Menzul 1932, foundered 1939
	211941	Cataract	City of Baltimore	Fireboat	185	89	1914	Later tug Wm J Taylor, Lucy Watson, Stacey Fackrell. Scrapped 1987
239		Minquas	US Army CoE	Dredger	900	192	1915
	213570	Sam Weller	Maryland Dredging	Tug	99	71	1915
		Laurel	U.S Lighthouse Service	Tender	299d	104	1915	Sold 1931 to be freighter Lake George
245			Standard Oil	Tank Barge	70	64	1916
	215393	Gypsum Prince	J.B. King Trans. Co.	Tug	299	118	1917	Owned by U.S. Navy in WWI, kept name
248	215201	Freeport Sulphur No. 2	Freeport Sulphur	Tug	488	152	1917	Later Sabine 1930, scrapped 1950
249	217811	Norfolk	Northern Trans. Co.	Tug	343	127	1919	Later Henry Steers 1928, scrapped 1961
250	218224	Boston	Northern Trans. Co.	Tug	343	127	1919	Later Wathen 1941, wrecked 1944
251	224484	Jacob France	Standard Oil Co.	Tug	336	127	1920	Compl as Aladdin, later Esso Aladdin 1938, Aladdin 1949, scrapped 1962.
252	168190	S. O. Co. No. 5	Standard Oil Co.	Barge	962	199	1921	Later Esso Barge No. 5
	298069	Capain A. Canfield	US Army CoE	Tender / Tug	18d	50	1923	Later Julie Dee, Wilhelm Baum, active
255		Frankford	US Army CoE	Tug	46d	53	1924
256		Lewes	US Army CoE	Tug	46d	53	1924
257		Menominee	US Army CoE	Launch	54d	53	1924
258		Col. J.D. Graham	US Army CoE	Tender/ Tug	43d	54	1924	Later Nicholson, Magnetic,now J D Graham
	224329	Grace	W.R. Grace & Co.	Tug	86	72	1924
	225036	York	W. T. Ashe	Ferry	260	106	1925	To Mexico as Yucatan, later York  Existence in doubt 1983
262	226060	Samson	Diamond P. Transportation	Tug	138	83	1926	Later River Rat. Existence in doubt 1991
263	225918	Dan Hardie	Peninsula Terminal Co.	Ferry	259	106	1926	Later Galveston, to Mexico 1957
264	228157	Charles A. Evans	District of Columbia	Patrol/Fireboat	25	53	1929	Later Kanak, documentation expired 2005
		Argus	US Army CoE	Patrol Tug	346d	121	1930	Later fishing Smith Point. Existence in doubt 1991
	229354	Irma	Atlantic, Gulf & Pacific Co.	Tug	32	55	1930
		G. B. Loring	US PHS	Tug	356	91	1930	Later Pilot, now Hamatra I.
267	229835	K. Whittelsey	Oil Transfer Corp.	Tug	185	91	1930	Late Grace Moran, Hercules, Sakonnet. Abandoned 1982, being restored 2006 as K Whittelsey but scrapped 2008
271		Walter Wyman	US PHS	Boarding Tug	196	100	1932	Later Marmer 1957, retired 1968.
272		Active	US Army CoE	Tug	300d		1932	Later Sea Eagle
273		Joseph Goldberger	US PHS	Boarding Tug	74	71	1933
274		W.H. Welch	US PHS	Boarding Tug	186	101	1934
275		Salem	US Army CoE	Tug		53	1935
276	234382	May	Atlantic, Gulf & Pacific Co.	Dredge Tender	32	58	1935
		B W Brown	US PHS	Quarantine Launch	36d	60	1937
		Stephen F. Austin	US Army CoE	Tug		101	1938	To US Army as LT 800.
		MG Harry L Rogers	US Army QM Corps	Coastal Cargo Ship	425		1940
282	239957	Chas. D. Gaither	City of Baltimore	Police Boat	23	48	1940	Sold 1972, to Baltimore & Chesapeake SB Co. 2011, active.
283	240982	Palua	Iron Mines Co. of Venezuela	Tug	32	54	Sep-41
284		L 68	US Army	Dist. Box Boat		64	Jan-42
285		L 69	US Army	Dist. Box Boat		64	Feb-42
286		L 70	US Army	Dist. Box Boat		64	Feb-42
287		L 71	US Army	Dist. Box Boat		64	Mar-42
288		L 72	US Army	Dist. Box Boat		64	Mar-42
289		Cardenas	Panama Canal	Tug	391	125	1943
290		San Pablo	Panama Canal	Tug	391	125	1943	Later San Pablo I 1990, Aquilon 1997, Red Sea 1998, reefed 2007.
291		Culebra	Panama Canal	Tug	391	125	1943
292		BSP 1799	US Army	Barge, Derrick	296	125	Aug-44	Later trawler Iron Head, now Notorious.
	248753	Curlew		Tug	12	37	1945	Deleted 2006?
Built by Wills-Spedden Shipyard
		Driftmaster	US Army CoE	Debris Collector			1949
	258603	J. C. Stephens	Magnolia Petroleum	Crewboat	85	76	1949
	259284	Maury	Johns Hopkins Univ.	Research Vessel	33	58	1950	Existence in doubt 2006
Built by Chesapeake Marine Railway Company
151	261303	G. and E. No. 3	Consolidated Gas & Electric	Tug	120	80	1951	Later Chesapeake Coast, now American
152		Langley	NACA	Ferry	109	76	1952	Later research vessel Langley, ferry Charlotte 1980, then Bayfield, active.
?	264125	Mr. Van	Gahagan Overseas Constn.	Dredge Tender	26	47	1952