Hydrosphere UK Ltd Complete Products & Services Catalogue

More documents

Recommendations

Info

MULTIPLE PEL SECTOR LIGHT APPLICATIONS Provide Extra Subtense (Red Sea) One PEL-6-20D light and two PEL-6 lights with 10.75° subtense are mounted on a single station and project a total subtense of 41°. An overlap of 0.25° between lights ensures the full sector is covered. A wider coverage is achieved than could be provided with a single light, and vertical divergence is less. The relationship between subtense, intensity and colour fi lter transmission is used to good effect – the intensity from the 10.75° lights (in coloured sectors) is about the same as the 20° light (in white sector). Mark a Restricted Area Two or more lights can be used to provide a fi x over a restricted area. The lights are read as a pair (or group), and may also be fl ashed in sync to aid identifi cation. The area defi ned by the lights may be quite irregular. Sectors can be any size and in any sequence, limited only by the total subtense of the light. Restrictions can be to keep vessels inside (anchoring area, turning basin) or exclude entry (no-anchoring zone, hidden shoal or other danger area). Floating buoys may not be required. Red Sea Shoal Projected Display 8˚ 25˚ 8˚ One PEL-6-20D Sector Light Two PEL-3-10.75D Sector Lights Two PEL-3-15D Sector Lights Mark a Parallel Channel The channel can also be convergent or divergent, and the same lights used by a dredge. Each light has two sectors, and the lights are read as a pair, perhaps fl ashing in sync. An oscillating sector on the inside of each boundary is possible. This example is used when the taper shape of a single sector is too much compromise. The advantage of this method over leading lights is that both sector lights only require the intensity of a front lead, and that even at great viewing distances the sensitivity is not reduced. Mark an Undersea Pipeline (Taranaki, NZ) Two wide-angle anamorphic PEL Sector Lights are used to defi ne a no-trawling corridor between an offshore oil production platform and the shore station. This is to protect the underwater pipeline connecting the two. The restricted area is defi ned when both lights are red. In this case the lights are not synchronised, but have different characters, and because the background is unlit farmland, relatively low intensities are adequate. Marker boards are used to defi ne the corridor during the day. Position A B C Signal Production Station A B C Pipeline Converging Beam Two PEL-6-5D Sector Lights Position A B C A B C Signal Platform 22.54NM Two 150 Anamorphic PEL Sector Lights 18
OSCILLATING BOUNDARY APPLICATIONS Mark a A Turning Track (Tory Channel, NZ) Cook Strait, between the two islands of New Zealand, is a very rough stretch of water with strong tidal rips, and is exposed to strong winds. A regular inter-island rail ferry must initiate a turn from inside the sound to exit through an unlit narrow passage, while remaining clear of rocks on each side of the channel. The PEL Sector Light fi tted with oscillating boundary provides the pilot of the relatively cumbersome ferry with a progression of distinct sectors to turn through as he emerges into the strait. Multi-Leg Entrance into a Harbour (Lyttleton, NZ) A 10° PEL Sector Light with oscillating boundary provides the main lead into this harbour. The oscillating boundary system makes it easier to maintain the correct track, by giving early warning of lateral deviation. Once within the inner harbour, a second PEL Light (of 5 degrees total subtense for greater intensity) is used to mark a narrow dredged channel. This simple system of two PEL Sector Lights replaced a more complicated and costly arrangement of shore-based lights and fl oating buoys. Marlborough Sounds Lyttleton Harbour Cook Strait One PEL-3-5D Sector Light One PEL-3-5D Sector Light One PEL-3-10D Sector Light Diffi cult Turn Onto Narrow Track (all 7 sectors used) Adverse wind and current makes turning large vessels diffi cult. Speed is required to maintain steerage, and extra information is needed to execute the turn safely. The use of all seven possible sectors in a PEL Sector Light gives the mariner the best information. Flashing red on fi rst encounter initiates the start of the turn. The transition to steady red occurs halfway through the turn, the alternating red/white sector is next traversed, and fi nal alignment is gradually achieved within the narrow white sector. Turning Circle (Mermaid Sound) Two PEL Sector Lights are located at a petroleum terminal, and the lights are enclosed in fl ameproof enclosures. The restricted area of the turning basin is defi ned by these sector lights. Each white and alternating sector is 100 metres wide at the centre of the basin. The oscillating boundary gives a clear indication of progress around the turning track in either direction, assisting the tanker to arrive at the jetty in the correct position. This system is simpler, more reliable and less costly to maintain than a buoyage system. Fl G G Ship's Signal Position Displayed A B C D E Jetty Star Rock Turning Basin C E D B A Alt G/ W W Alt R/W R Fl R Cooling Water Intake One PEL-6-20 Sector Light Two PEL Lights with Oscillating Boundary 19
Page 1 and 2:
data buoy platforms moorings naviga
Page 3 and 4:
trusted by the industry Our product
Page 5 and 6:
Page 7 and 8:
permanent marking signage Maintenan
Page 9 and 10:
Page 11 and 12:
fog signals & detectors Visibility
Page 13 and 14:
Page 15 and 16:
adar reflectors A range of active-p
Page 17 and 18:
Page 19 and 20:
Page 21 and 22:
Page 23 and 24:
1.24m diameter range Available with
Page 25 and 26:
Page 27 and 28:
Page 29 and 30:
Page 31 and 32:
Page 33 and 34:
Page 35 and 36:
Page 37 and 38:
Page 39 and 40:
Page 41 and 42:
Page 43 and 44:
Page 45 and 46:
Page 47 and 48:
Page 49 and 50:
Page 51 and 52:
Page 53 and 54:
jetty masts & power systems Folding
Page 55 and 56:
guides the way VEGA LIGHTS MARINE A
Page 57 and 58:
VLL-43 LED LINEAR LEAD LIGHT A powe
Page 59 and 60: guides the way VLB-2 LED MARINE BEA
Page 61 and 62: data buoy platforms moorings naviga
Page 63 and 64: guides the way VLB-67 LED MARINE BE
Page 65 and 66: Program Capability • 246 flash ch
Page 69 and 70: • Programmable low voltage cutoff
Page 73 and 74: Approved for use as Class A, B, and
Page 77 and 78: Bird Spikes Sealing Stainless steel
Page 79 and 80: guides the way VLL-43 LED LINEAR LE
Page 81 and 82: guides the way VRL-91 UNI-MEGA HIGH
Page 83 and 84: INFORMATION REQUIRED FOR A VRL-91 U
Page 85 and 86: guides the way VLS-46 LED SECTOR PR
Page 87 and 88: • Separate day and night intensit
Page 89 and 90: guides the way VSL-73 PRECISION ALL
Page 91 and 92: INFORMATION REQUIRED FOR A VSL-73 1
Page 93 and 94: guides the way PEL SECTOR LIGHTS PR
Page 95 and 96: for sectored navigation lights. If
Page 97 and 98: The effective intensity of a lamp f
Page 99 and 100: PEL-3 SECTOR LIGHTS • Invented in
Page 101 and 102: PEL-3 Peak Intensities in White, Re
Page 103 and 104: MANUFACTURED BY VEGA INDUSTRIES LTD
Page 105 and 106: OSCILLATING BOUNDARY AND SECTOR ANG
Page 107 and 108: CALC-2001 & LOGIC INVERTER The CALC
Page 109: SINGLE PEL SECTOR LIGHT APPLICATION
Page 113 and 114: guides the way VRL-74 LED RANGE LIG
Page 115 and 116: EASY PROGRAMMING The VRL-74 support
Page 117 and 118: guides the way VLB-36 LED OBSTACLE
Page 119 and 120: • Hard wire sync with sync delay
Page 121 and 122: guides the way VLB-92 OMNI-MEGA LON
Page 123 and 124: SPECIFICATIONS Optical Light Source
Page 125 and 126: guides the way VRB-25 MARINE ROTATI
Page 127 and 128: Mfg by Vega Industries Ltd H eriot
Page 133 and 134: All Mobilis data buoys comprise a r
Page 137 and 138: The buoys are constructed using rot
Page 149 and 150: self contained and standalone LED l
Page 159 and 160: guides the way VSU-29 GPS SYNC UNIT
Page 161 and 162:
guides the way VEGAWEB MONITORING S
Page 163 and 164:
Use of the VegaWeb monitoring syste
Page 165 and 166:
show all

Hydrosphere UK Ltd Complete Products & Services Catalogue

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?