british British Royal Navy - Admiralty - RN HMT Mastiff ? [+1939]
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  Details  
 
general
nationality british
purpose fishing
type minesweeper
propulsion steam
date built 1938
status
live live
details
weight (tons) 520  grt
dimensions 45.7 x 8.2 x -- m
engine triple expansion, 1 boiler, single shaft
armament 1 X 4" and 2 X .303" machine guns
power 850  n.h.p.
speed 13  knots
yard no. 247
about the loss
cause lost mine
date lost 20/11/1939  [dd/mm/yyyy]
about people
builder
Henry Robb Ltd., Leith
owner
British Royal Navy - Admiralty - RN, London
captain
about the wreck
depth (m.) 17 max. / 15.8 min. (m)
orientation 97°
protected
war grave
updates
entered by Lettens Jan
entered 27/08/2008
last update Allen Tony
last update 15/12/2011
 
  Position  
 
Lettens Jan02/11/2009
latitudeUK hydro member
longitudeUK hydro member
AISUK hydro member
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  The Wreck today  
 

Lettens Jan02/11/2009

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Lettens Jan01/10/2009

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  History  
 
Lettens Jan20/11/2011HMT Mastiff

Requisitioned by the Admiralty and built in 1938 by Henry Robb, Leith. Triple expansion engine, 1 boiler; 1 x 4" gun, 2 x .303" guns;

The trawler Mastiff was rebuilt as an armed minesweeper. On November 20th 1939, Mastiff was sunk in the Thames estuary by a mine.
Lettens Jan02/11/2009UK hydro member
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Lettens Jan01/10/2009UK hydro member
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About Owners
 
British Royal Navy - Admiralty - RN, London

In 1509 when Henry VIII was crowned he realised the growing navel power of King James IV of Scots. James had built an impressive fleet to control the Western Isles and was allied to France. Henry built up of his own fleet, the Navy Royal, as it was then known. New ships were constructed, the best known being the Mary Rose. Smaller types of warships (galleases) combining the best features of oars, sails and guns were also built. By Henry's death in 1547 his fleet had grown to 58 vessels.

In 1546 a 'Council of the Marine' was established which later became the 'Navy Board'. The Navy Board was in charge of the daily administration of the navy until 1832 when it was combined with the Board of the Admiralty.

Elizabeth I inherited a fleet of only 27 ships in 1558. Instead of building up her own fleet Elizabeth encouraged private enterprise against Spain's new empire. Men like Sir John Hawkins and Sir Francis Drake to command groups of Royal and private ships to attack the Spanish. When Spain threatened invasion with its Armada in 1588 the Navy of England both Royal and private defended the realm.

Early in the Seventeenth Century, larger galleons were built with heavier armaments. the largest English ship was Sovereign of the Seas built for prestige purposes by Charles I in 1637. The first ship with three gun decks to carry her 102 guns, she was the most powerful ship in the world for many years.

When King Charles II came to the throne in 1660 he inherited a huge fleet of 154 ships. This was a permanent professional national force and the beginning of the Royal Navy as we know it today.

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About Builders
 Henry Robb Ltd., Leith
Henry Robb started his career as a yard manager for Ramage & Ferguson. He set up by himself to capitalise on all the work from wrecked ships salvaged following the ravages of the First World War, he leased dry-docks along from Ramage & Fergusons yard, and went into the business for himself. In the early 1920’s he won an order for building there first ever ship. In 1924 Robb bought the shipyard of Hawthorns and Co. In 1926 Henry Robb bought the Crane and Somerville yard. During the 1920s The new company started by making dredgers, followed by coasters and steamers. During the 1930's steamers and steam colliers were the main output for the yard along with coastal colliers. A further yard was acquired by Robb's in 1934 having previously belonged to Ramage and Ferguson. In World War II Robb's built a large number of naval warships for the Royal Navy. Henry Robb died in 1951 and was succeeded by his son of the same name.

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Lettens Jan  04/11/2010
Minesweeping in WWII
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HMT Mastiff ? [+1939]
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