Tímarit Verkfræðingafélags Íslands


Tímarit Verkfræðingafélags Íslands - 01.05.1922, Blaðsíða 15

Tímarit Verkfræðingafélags Íslands - 01.05.1922, Blaðsíða 15
TlMARIT V. F. í. 1922. 37 „Hornafjarðarfljót", by which the trading station is lying is continually carrying sand and other material which is alternately deposited in and cut away from the mouth of the river. Consequently the navigation is extremely difficult, and the en- trance to the harbour, always narrow and winding, is so variable that it has been found impossible to make out a chart of the harbour. Very careful examinations have been made at this place, as it would be of great importance to have a good har- bour for motor-boats near the large fishing banks on the south-eastern coast which are abounding in fish during the winter season. To stabilise or im- prove the entrance is, however, impossible; the only thing which can be done in this direction is to build a lighthouse on „Hvanney“ for which the necessary grant has been obtained. On the other hand it would be possible to improve the harbour itself (see map X) by building a jetty from „Heppa“ out to „Standey“, 340 m long by 4 m wide, with stone-clad slopes on both sides, the top being 2,5 m above low-water. There is no swell here, but the jetty is meant to support a quay on piles, or projecting bridges for motor-boats. On ,,Standey“ is suggested a landing-bridge (also on piles), 60 m long by 7 m wide, and the digging-out of a swinging-place for the boats, 150 m by 75 m and 4 m deep. These constructions should be com- pleted at the same time as the jetty, and the cost is estimated at Kr. 285,000. 2 5. H o r n s v í k, m a p X. This place, east of Hornafjörður, has often been mentioned as suit- able for harbour constructions. The depth of the harbour would not in itself make this impossible, but the place is entirely open and unprotected. It would therefore require very large capital outlays to carry out hai’bour constructions here — for in- stance two sufficiently strong moles would un- doubtedly cost over 10 mill. Kr., and would not create a harbour which would be available under all conditions. The mole shown on the map would cost abt. 2 mill. Kr., which is greatly in excess of what may be considered reasonable in comparison with the use that could be obtained from such a mole. 2 6. P a p ó s. The entrance to this place is winding and narrow, full of rocks on all sides, and the na- tural conditions on the whole so bad that it would be useless to attempt to carry out harbour con- structions here. 2 7. H v a 1 n e s k r ó k. This creek has often been mentioned together with Hornsvik as a basis for harbour constructions. The result of the examina- tions and the soundings which were taken show, however, that this is impossible, as the depth in- creases very quickly from the shore, and a suitable protected area cannot, therefore, be obtained at a reasonable cost. 2 8. D j ú p i v o g u r, m a p XI. Dj úpivogur is the first fairly good and safe harbour on the whole south coast. There are, however, two im- portant draw-backs: the- entrance is difficult as the sea just outside is full of rocks, and this part of the country often has very foggy weather; sta- tistics show as much as 171 foggy days in the year. Moreover the harbour would be rather too far from the best fishing banks to be used as a basis for the fishing, as the boats could not go backwards and forwards in one day, and are not built to lie out at night. It is planned to build new lighthouses to assist the navigation, and if at the same time a system of fog-sirens was established this harbour would undoubtedly be a very useful base for a very profitable fishing. The harbour itself, when reached, is good, and does not require much protection beyond that given by the natural conditions. If desired a mole of 100 m could be built as shown on map XI out on one of the rocks in the sea. This would give cover in eastern storms, but as the cost would be consider- able, abt. Kr. 450,000, without obtaining a reason- able advantage, it seems more to the purpose to expend this sum on marking the entrance, im- proving the lighting, establishing fog-sirens etc. III. The eastern Coast. The firths of the east coast are on the whole so safe and offer in themselves such good protection that there is no need of building harbours or im- prove the landing facilities. Construction of quays and landing-bridges which might be repuired can without difficulty be carried out on local initiative, as the need arises. 2 9. Skálar on Langanes, map XXI, is the only place where the natural conditions could be considerably improved upon to assist and further develop the fishing which during later years has ’ sprung up there. The landing conditions are very difficult, as the foreshore is very narrow with per- pendicular rocks of 10—18 m height rising behind it. There is only at two places a falling-off in the rocks where it is possible to land boats. The westerh place is the broadest, but the landing is difficult, and it would be too costlv to build protection that would be of any use. On the other hand it would be possible on a small tongue of land and some rocks outside the eastern landing-place to build a wall of concrete. Such a wall with a circular mole-head is shown on map XXI. The wall should be cast direct on the reef, which is dry at low-water, and outside that on a foundation of sacks of concrete,
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