Siemar V0.3e - Siena shareware


Principle

The software calculate hight and low waters of the reference
station to which the selected station is subordinated and moon
aspects at these times.
Then tidal differences of the selected station are applied.
Water dephts at intermediate times are approximated by a square
sine curve.
The moon aspect allows you to predict the night visibility and to
estimate currents strengh in keeping with spring tides (full or new
moon) or neap tides (first or last quater).


Performance

Original data are made up of 20 reference stations and
235 subordinate stations.

Mean absolute differences on hight and low waters calculation of
reference stations are about 10 cm and 10 minutes.

A  station research needs a 50 seconds delay.
Hight and low waters calculation needs a 50 seconds delay.
Screen refreshing needs a 20 seconds delay.


Data updating

SIEMARDB alias allows you to update data.

Avoid too many updating on Flash SSD.

Best warranty of up-to-date harmonic constituents is obtained
with hydrographic authorities of concerned countries.
Especially IHO data updating is'nt sure.
French "Service Hydrographique et Ocanographique de la Marine"
supplied original data. SAINT MALO constituents are SAINT MALO
PORT constituents used from 1999.

Tidal differences data (REFERENC.DBF et RATTACHE.DBF) are
available  every year on "Votre journal de bord - Bloc Marine" or
"Skipper".


New stations data entry

Sa, Q1, O1, K1, N2, M2, MN4, M4, MS4 harmonic constituents are
needed to entry a new reference station in CONSHARM.DBF.
It's necessary to also entry it in REFERENC.DBF and RATTACHE.DBF
even without subordinate stations. In this case, times may have
any values in REFERENC.DBF and tidal differences must be null in
RATTACHE.DBF.

See previous item for data sources.


Installation

The different files must be copied on the same logic unit X
(A or B or  M) in this way:
X:\APP\SIEMA03e.OPA
X:\APP\SIEMARDB.ALS
X:\APP\SIEMAR\COEFF.ODB
X:\APP\SIEMAR\CONSHARM.DBF
X:\APP\SIEMAR\REFERENC.DBF
X:\APP\SIEMAR\RATTACHE.DBF
X:\APP\SIEMAR\CURSEUR.PIC
X:\APP\SIEMAR\LUNES.PIC
X:\APP\SIEMAR\SIEMAR.PIC
X:\APP\SIEMAR\SIEMAR1e.RSC
X:\APP\SIEMAR\SIEMAR2e.RSC
X:\APP\SIEMAR\SIEMAR3e.RSC

The for latest files are optional. They are introduction screen and
help files.

SIEMA03e.OPA and SIEMARDB.ALS must be installed by [Psion]+[I].


Set up

The software opens a new subdirectory Y:\SIEMAR on the logic
unit Y specified by the user. A  RAM unit is better. There is the
SIEMAR.INI file in this subdirectory. It contains the registration
informations, preferences and latest calculated values.

WARNING ! Erasing this file needs to register again the
code if your are a registered user.


Registration

This software is a shareware. It don't work without registration for
 a later date than October 31, 1998.
 
Registration allows you to profit by gratis updating.

To register on line use http://www.regsoft.com/ in EPOC page
Payment: $30 by international credit card or check on US bank

You alsomust complete and send me LICENCEe.TXT with
payment. I'll send your code by return of post (and email if you have
 it).
 Payment: 15OFF or UKP15 or DM50 or $30 on a french bank or by
 Eurocheque or cash.

 Registration screen appears while the shareware is'nt registered.


Responsability

The author don't accept any responsability in consequences of this
program's use. He calls to you that official tides tables published by
hydrographc authorities offer best warranty of precision and that
the skipper must include a clearance in his calculation.


Updating history
Version 0.3e - 11/8/1998
Algorithm modification to avoid no convergence
Author's URL and email, payment facility and free using period changed

Version 0.1e - 3/20/1997
First english version
French version 0.1f translation


Author

J.L.HOCHART
9ter rue Gambetta
50130 OCTEVILLE
FRANCE
Phone: (33) 2 33  93 53 34
email: molpetrus@geocities.com
URL: http://www.geocities.com/Colosseum/Dugout/7981/
