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‘Persian Gulf pilot comprising the Persian Gulf and its approaches from Ras al Hadd, in the south-west, to Cape Monze, in the east.’ [‎181v] (369/404)

The record is made up of 199 folios. It was created in 1932. It was written in English. The original is part of the British Library: India Office The department of the British Government to which the Government of India reported between 1858 and 1947. The successor to the Court of Directors. Records and Private Papers Documents collected in a private capacity. .

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296 appendix v
high water at Shatt al 'Arab bar, even though, as computed, this is
the lower high water.
Instructions .—The first line of each portion of each table gives
the interval from higher high water at the local reference station,
the second line the interval from the corresponding higher high water
at Shatt al 'Arab bar. The line marked SD in the left column gives
the rates of the semi-diurnal constituent of the stream, and that
marked D the rates of the diurnal constituent, according to the time
intervals from higher high water.
The rates given in the tables are to be multiplied by the factor
from Table V, according to astronomical conditions.
The stream to be expected at any time is the sum of the rates of
the semi-diurnal and diurnal constituents at that time. When
using Table I, the N. and E. stream components must be computed
separately and their resultant found from the Traverse table.
Example : Required direction and rate of stream at position of Table I
at 20h. on 10 December, 1930.
10 December is 1 day before O. 2 days before S. Factors,
0-8 and 0-9.
H.H.W. at Shatt al 'Arab bar 01 05 (11th). (Admiralty Tide
Tables, Part I).
,, Little Quoin island, 12 30 (10th). (Computed from
harmonic Constants).
I. Referred to Little Quoin island, time is 7^h. after H.H .W.
N. Component : (—0-2 xO-8) + ( — 0-2 xO-9) = —0-34
E. Component: (+0-3 X 0-8) -j- (+0-85 X 0-9) = -|-l-00
Stream: 109° 106 kn.
2. Referred to Shatt al 'Arab bar, time is 5h. before H.H .W.
N. Component: ( —O-lxO-8) +( —0-2x0-9) = —0-26
E. Component: (+0-3 X 0-8) + (+0-9 X 0-9) = +1-09
Stream: 103° 1-12 kn.
Note .—Difference in times of H.H.W. at the local reference station and at
Shatt al 'Arab bar is not constant ; variations in this difference
result in small differences in the computed stream.
Current.
Observations show currents as follows :—
Position of Table I : In December, E.ly, 0-2 kn.
Position of Table II : In March, SW.ly, 0-75 kn ; and in
January, S.ly, 0-5 kn.
In Henjam sound : In December, no appreciable current.
Near Jezirat Tunb : In April, W.ly, 0-25 kn.
Information regarding currents in the entrance of the Persian
gulf is incomplete ; the probability is that, owing to evaporation in
the Gulf, an in-going current runs in summer, and that in winter,
when evaporation is least, the in-going current is at its
minimum. From the results of observations, given above, it is
probable that the rate of the in-going current in the narrowest part
of the entrance, may be as much as 2 kn. at midsummer, decreasing
westward and south-eastward.
Horizontal movement of the water is the resultant of stream and
current. Stream, as found from the tables, is therefore to be com
bined with current, using the Traverse table.

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Content

Persian Gulf The historical term used to describe the body of water between the Arabian Peninsula and Iran. pilot comprising the Persian Gulf The historical term used to describe the body of water between the Arabian Peninsula and Iran. and its approaches, from Ras al Hadd, in the south-west, to Cape Monze, in the east. Published for the Hydrographic Department of the Admiralty by His Majesty’s Stationery Office, London, 1932. Eighth edition.

The pilot begins with a number of introductory sections:

  • Notice of caution when approaching British ports, including the closure of ports and examination of vessels entering ports (folio 1v, inside front cover);
  • Notations of supplements and annual summaries of notices to mariners relating to this book (folio 2);
  • Cautionary notes on the measurements, including those for (bearings, longitude, latitude, depth) given in the pilot, and the different methods of shading used to indicate colours of flags, tidal light signals and beacons in the pilot (folio 5);
  • Advertisement to the eighth edition (folio 6) providing an outline history of the pilot, and updates to the latest edition;
  • Contents page (folios 7v-8), referring to the pilot’s pagination;
  • A list of views (illustrations), with reference to the pilot’s pagination (folio 8v);
  • A glossary of terms (folio 9), organised alphabetically, and with an indication of their origin (Arabic, Baluchi, Hindustani, Persian);
  • Notes on the system of orthography (folios 10-11);
  • Information relating to Admiralty charts and other hydrographic publications and general navigation (folios 12-19), with sections on the correction of Admiralty charts, and their degree of reliance, navigational publications, including the Admiralty lists of lights and wireless signals, tide tables, and general remarks relating to practical navigation;
  • A map of the head of the Persian Gulf The historical term used to describe the body of water between the Arabian Peninsula and Iran. , dated July 1932, indicating those areas covered by Admiralty charts (folio 20v);
  • A map of the Persian Gulf The historical term used to describe the body of water between the Arabian Peninsula and Iran. and Gulf of Oman, dated July 1932, with an indication of those areas covered by Admiralty charts mentioned in the pilot (folio 21v);
  • An insert (folio 22) detailing those elements not included in the present volume.

The main body of the pilot is arranged in chapters and appendices as follows:

Throughout the main chapters there are illustrations of the parts of the coastline being discussed by the accompanying text. These illustrations, which are a mix of line drawing and reproductions of watercolours, indicate the profile of the land, and highlight distinctive topographical features such as trees and forts.

Extent and format
199 folios
Arrangement

The pilot is arranged into eight chapters (I-VIII) and five appendices (I-V). The arrangement of chapters is geographical, moving from the easternmost point of the Gulf in chapter II to the westermost point in chapter VIII. The contents page (ff 7-8) and alphabetically ascending index (ff 182-93) refer to the pilot’s pagination system.

Physical characteristics

Foliation: There is a foliation sequence, which is circled in pencil, in the top right corner of the recto The front of a sheet of paper or leaf, often abbreviated to 'r'. of each folio. It begins on the front cover, on number 1, and ends on the inside of the back cover, on number 199.

Pagination: There are two printed pagination systems, which generally situate numbers in the top-left corner of versos and the top-right corner of rectos. The first, which uses Roman numerals, runs through the pilot’s introductory pages (ff 6-19). The second pagination system uses Arabic numerals, and runs through the remainder of the pilot (ff 23-197).

The number of each chapter is indicated throughout the chapter (expressed as ‘Chap.’ and the chapter number as a Roman numeral) in the top-left corner of rectos and the top-right corner of versos. The lines of text on each page in each chapter are numbered in intervals of five (i.e. 5, 10, etc.)

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English in Latin script
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‘Persian Gulf pilot comprising the Persian Gulf and its approaches from Ras al Hadd, in the south-west, to Cape Monze, in the east.’ [‎181v] (369/404), British Library: India Office Records and Private Papers, IOR/L/PS/20/C251, in Qatar Digital Library <https://www.qdl.qa/archive/81055/vdc_100023623199.0x0000aa> [accessed 29 April 2024]

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