British Sixth Rate ship 'Port Mahon' (1740)

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Port Mahon	5884
Nominal Guns	20	BWAS-1714
Nationality	Great Britain
Operator	Royal Navy
Ordered	4.10.1739	BWAS-1714
Keel Laid Down	17.10.1739	BWAS-1714
Launched	26.8.1740	BWAS-1714
First Commissioned	15.7.1740	BWAS-1714
How acquired	Purpose built	BWAS-1714
Shipyard	Deptford - London	BWAS-1714
Designed by	The SurveyorsBritish Designer Ship Builder Service 1739-1806	BWAS-1714
Constructor	John BuxtonBritish Ship Builder	BWAS-1714
Category	Sixth Rate	BWAS-1714
Ship Type	Ship	BWAS-1714
Sailing Rig	Ship Rigged	BWAS-1714
Sold	29.6.1763	BWAS-1714

Dimensions

DimensionMeasurementTypeMetric EquivalentBWAS-1714
Length of Gundeck106' 4"Imperial Feet32.3257
Length of Keel87' 5 ¼"Imperial Feet26.524
Breadth30' 8"Imperial Feet9.3472
Depth in Hold9' 4"Imperial Feet2.8448
Burthen437 ³⁴⁄₉₄Tons BM

Armament

26.8.1740Broadside Weight = 90 Imperial Pound ( 40.815 kg)BWAS-1714
Upper Gun Deck20 British 9-Pounder

6.1747Broadside Weight = 102 Imperial Pound ( 46.257 kg)BWAS-1714
Lower Gun Deck2 British 9-Pounder
Upper Gun Deck20 British 9-Pounder
Quarterdeck2 British 3-Pounder

Crew Complement

Date# of MenNotesSource
1733140Design Complement

15 Ship Commanders

DatesRankNameSource
15.7.1740 - 29.7.1741Captain Transfered ADM 6/15/309BWAS-171418.9.1741 - 4.6.1744Captain ADM 6/15/458BWAS-17145.6.1744 - 11.8.1745Captain Transfered ADM 6/16/317B05112.7.1745 - 11.4.1746Captain ADM 6/16/508ADM 6/1612.4.1746 - 19.8.1747Captain Transfered ADM 6/17/87BWAS-171421.8.1747 - 27.12.1748Captain ADM 6/17/260BWAS-171423.1.1753 - 24.1.1754Captain ADM 6/18/56BWAS-171424.1.1754 - 9.4.1756Captain ADM 6/18/88BWAS-17149.4.1756 - 4.4.1757CaptainBWAS-17144.4.1757 - 8.4.1757Captain ADM 6/18/379BWAS-17148.4.1757 - 30.9.1758Captain ADM 6/18/383BWAS-171430.9.1758 - 15.2.1759Captain Transfered ADM 6/19/18
Issued by , North America
Confirmed 2.1.1759ADM 6/1930.1.1759 - 22.2.1759Commander ADM 6/19/301
Issued by , Jamaica - Greater Antilles
Confirmed 23.3.1761BWAS-171422.2.1759 - 11.3.1762Captain ADM 6/19/39BWAS-171412.3.1762 - 22.3.1763CaptainBWAS-1714

7 Commissioned Officers

DatesRankNameSource
15.7.1740 - 29.7.1741Lieutenant Transfered ADM 6/15/309ADM 6/1530.7.1741 - 6.7.1743Lieutenant ADM 6/16/217
Confirmed 12.9.1743ADM 6/1629.9.1743 - 9.6.1746Lieutenant ADM 6/16/221ADM 6/1610.6.1746 - 9.6.1747Lieutenant ADM 6/17/114ADM 6/179.6.1747 - 27.12.1748Lieutenant ADM 6/17/235ADM 6/199.12.1755 - 26.4.1759Lieutenant Transfered ADM 6/18/217ADM 6/1818.3.1761 - 22.3.1763Lieutenant ADM 6/19/467
Issued by , Jamaica - Greater Antilles
Confirmed 2.3.1763ADM 6/19

3 Petty Officers

DatesRatingNameSource
19.11.1744 - 16.7.1746Midshipman Transfered ADM 107/4/278ADM 107/425.5.1755 - 4.12.1755Midshipman Transfered ADM 107/5/13ADM 107/529.3.1759 - 20.8.1760Midshipman ADM 107/5/277ADM 107/5

5 Crewmen

DatesRatingNameSource
23.8.1741 - 6.10.1741Able Seaman ADM 107/3/449ADM 107/327.6.1744 - 18.11.1744Clerk ADM 107/4/278ADM 107/43.9.1747 - 5.4.1748Yeoman of Sheets ADM 107/4/297ADM 107/46.4.1748 - 27.8.1748Clerk ADM 107/4/297ADM 107/429.3.1754 - 24.5.1755Able Seaman ADM 107/5/13ADM 107/5

Service History

DateEventSource
26.8.1740building at Deptford - London at a cost of £3879.0.0dBWAS-1714
26.8.1740Began fitting at Deptford Dockyard - Deptford BWAS-1714
7.9.1740Completed fitting at Deptford Dockyard - Deptford at a cost of £3002.17.9dBWAS-1714
1741In the Bay of BiscayBWAS-1714
2.1742In the Western ApproachesBWAS-1714
30.4.1742Took the Sloop
9.6.1743Took the Privateer
10.5.1744Took the Privateer
5.1745In the ChannelBWAS-1714
2.1746Sailed to the coast of ScotlandBWAS-1714
27.3.1746Took the Privateer
4.1747Began small repair at Deptford Dockyard - Deptford BWAS-1714
6.1747Refitted as a 24 gun Sixth Rate Ship
6.1747Completed small repair at Deptford Dockyard - Deptford at a cost of £2889.19.3dBWAS-1714
19.7.1747Took the Privateer
1748At Annapolis RoyalBWAS-1714
23.11.1748Arrived at Plymouth ADM 106
27.12.1748

Paid off at Plymouth Dockyard

ADM 33
20.1.1748/49

Surveyed

BWAS-1714
6.1752Began middling repair at Plymouth Dockyard - Plymouth BWAS-1714
11.1752Completed middling repair at Plymouth Dockyard - Plymouth at a cost of £2946.18.1dBWAS-1714
1.1755Sailed for VirginiaBWAS-1714
4.1756In the DownsBWAS-1714
23.4.1757Sailed for North AmericaBWAS-1714
8.1757Louisbourg Expedition
6.6.1758The Siege of Louisbourg
1759Sailed for JamaicaBWAS-1714
6.6.1762Operations against Havana
22.3.1763

Paid off

ADM 33
3.6.1763SurveyedBWAS-1714
29.6.1763Sold at Portsmouth for £1,150BWAS-1714

Sources

IDNameAuthorType

ADM 106 Document

ADM 107/3 Archive

ADM 107/4 Archive

ADM 107/5 Archive

ADM 33 Archive

ADM 6/15 Archive

ADM 6/16 Archive

ADM 6/17 Archive

ADM 6/18 Archive

ADM 6/19 Archive

B051John Charnock, Digital Book

BWAS-1714Rif Winfield, Book

Previous comments on this page

Posted by Paul L Pace on Saturday 9th of January 2021 15:35

Extract of a Letter from Plymouth, March 12 [1756].
‘…Yesterday Morning arrived in the Sound six Sail of Transports from Cork under Convoy of the [24-gun HMS] Portmahon having on board [Lt.] General [Charles] Otway’s [35th] Regiment called the Buffs, and [Maj. Gen.] Lord John Murray’s [42nd] Regiment of Highlanders: They had a very fine Passage, being but 45 Hours from Cork to Plymouth.’

Source: Ipswich Journal, Mar. 20, 1756, p. 2.

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