Page 44: of Maritime Reporter Magazine (January 1985)

- KSiN

GEMS Level Switches for

Shipboard Service.

Where high reliability is required for monitoring liquid levels and signaling alarms.

There's a GEMS switch to meet all types of marine liquid level applications...to monitor and control levels, signal alarms, and to provide oil/water interface. Ideal for use with diesel engine fuel tanks, lube oil reservoirs, ballast, bilge, or oil sump tanks or for other common shipboard uses. .^FinL r • 58000 Series

Single or Multi-Level

Switches.

Custom-made switches, using standard components, are supplied with various mounting methods, lengths, floats, materials, etc. to suit the application.

LS-35565 (brass)/

LS-56060 (stainless steel) Externally

Mounted Models.

For use where access to inside of tanks is limited, such as on lube oil or fuel day tanks. Custom-length housings. Provide ease of maintenance and tank cleaning.

LS-270 Model with Protective

Shielding for

Turbulent In-Tank

Conditions.

I- Small and com-

II pact, unit side- mounts in tank. m Ideal for low level bilge or sump tanks, and oil/ water interface.

With Intrinsic Safety.

Zener Barrier Safe-Pak relays, FM approved, from

GEMS provide intrinsically safe operation when interfacing level switches with your AC or DC loads.

For application Information, call toll-free (800) 321-6070.

In Ohio call (800) 441-7733.

GEMS SENSORS DIVISION

Plainville, Connecticut 06062, U.S.A.

Telephone: (203) 677-1311; Telex: 99306

Sp Transamenca If Delaval

RIONI

Valmet Oy

Valmet's subsidiary yard, Val- metin Laivateollisuus Oy in Turku,

Finland, recently delivered the first unit in a four-vessel series being built for the Ministry of Gaz Indus- try of the USSR. The supply/ anchor-handling vessel Rioni incor- porates a number of interesting fea- tures, like the "father and son" ma-

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Circle 290 on Reader Sen/ice Card Circle 157 on Reader Service Card 42 chinery installation, as well as one- compartment structural subdivision to provide extra safety for opera- tions in harsh conditions such as the

Arctic.

The Rioni is the lead vessel in the series that will be delivered during 1984-85. Behind the customer's de- cision to place the order with the

Valmet yard was, among others, the fact that Laivateollisuus already had good experience with such craft.

In the mid-70s the Turku yard built a series of Ulstein type UT 704 ves- sels for I.M. Skaugen in Norway and

The Offshore Company of Houston.

The Rioni type, however, is the yard's own design and is tailor made to meet the stringent requirements of the USSR rules and specifica- tions.

The Rioni type is intended to serve the needs of offshore installa- tions with the transport of pipe, bulk material, fresh and potable water, fuel, cement and mud, as well as food provisions in refrigerated containers. She will also be able to tow drilling rigs and other struc- tures. In addition, she will be able to carry and handle anchor chains and cables of the offshore structures, as well as take the drill sludge ashore in containers.

The Rioni has an overall length of 220.8 feet, beam of 45.6 feet, and design draft of 16.4 feet. Storage capacities are designed to give 30 days of uninterrupted operation with a complement of 24 and at an 85-percent machinery output.

The machinery arrangement com- prises two separate propeller shafts, each driven via a reduction gear by two diesels of different sizes. Each diesel is coupled to the reduction gearbox by flexible couplings; in ad- dition, the smaller engines are cou- pled from their front ends to sepa- rate alternators. Thus the smaller engines serve a dual purpose—as a main engine or as a generating set, either coupled independently.

All four diesels are of Wartsila type 22, the two larger in V form with 22 cylinders each and the two smaller units in R form with six cylinders each. The corresponding outputs are 2,420 bhp and 1,200 bhp, respectively, for a total vessel output of 5,330 bhp. Both of the smaller engines are fitted with 550- kva alternators. One generator is needed to serve the vessel in all con- ditions except when the 1,000-hp bow thruster and the towing winch or the cargo-handling equipment are in operation.

The two propellers are of controll- i able-pitch type fitted in fixed noz- zles. They can be controlled by joys- tick type operation from both ends of the bridge. Also on the bridge are remote controls for the towing win- ch, and alarm stopping of the cargo pumps.

The one-compartment structural subdivision is achieved by careful placement of the bulkheads and tanks. As a result, either of the com- partments may be flooded without causing danger to the vessel.

RIVERANDA

Blount Marine

Blount Marine Corporation of

Maritime Reporter/Engineering News