PATROL BOAT REPORTMost conventional power craft cannot achieve speeds greater than 60 knots. San Francisco Bay at up to 45 knots. ETNZ chase boat is powered by four ful? ll the demanding task of supporting Willard Marine teamed up with Larry Naiad has a strong legacy of involve- 300hp Yamaha V6 four-stroke outboard the 72-ft. Americas Cup catamarans that Smith of Team Scarab to develop the de- ment in the Americas Cup, dating back engines and has a top speed of 58 knots.can accelerate to 40 knots in seconds. sign. Team Scarab has a 30-year heritage to tenders produced for Challenge New The ? berglass hull is topped with in-The power boat ride quality has to allow of designing and building world cham- Zealand for the 1992 event in San Diego. ? atable tubes allowing it to slip in be-for keeping up with an AC72 for an en- pion offshore race boats. The Interceptor Naiad was the ? rst company to develop a side the AC72. The ETNZ boat includes tire day, regardless of how fast the sail was initially prototyped in response to a RHIB more than 40 feet speci? cally de- a protected main deck cabin, head, and boat is going or what the sea conditions request by the U.S. Navy for a high-speed signed to carry the large fully battened large storage area under the foredeck. are like. The objective is to have a high combat mission boat. The 43 Assault is mainsails, unique at the time to the IACC The craft has four engines to deliver the speed craft that does not fatigue the crew also ideal for intercepting and boarding class of Americas Cup race yachts. power needed to right a capsized AC72. and keeps the team’s paramedic and dive boats and vessels in the open ocean. Wil- These vessels were used by Team New Running all four engines at 3,000 rpm crews ready for action. lard worked closely with Team Scarab to Zealand, which successfully challenged gives 30 knots and the boat uses 100 li-This is high stakes racing with multi- re? ne their Deep V stepped hull design for and won the Americas Cup in 1995 ters of fuel an hour. The boat holds 1,700 million dollar investments by owners in order to meet the U.S. Navy require- and successfully defended the Americas liters of fuel which gives a range of 510 and sponsors. With money of less object ments, including shock mitigation seats Cup in 2000. In addition to Team New nautical miles or 17 hours running time than usual it is interesting to compare the and light weight engines. The Interceptor Zealand, two of the challengers had at 30 knots. various designs that the teams selected also has a Supplemental Stability System Naiad boats custom built for the 2000 as Chase Boats. The racers also require a (S3) that increases the stability, passen- Americas Cup. The 46-ft. (14 m) Naiad Sitting On The Dock Of The Bayhigh performance Umpire Boat capable ger comfort and safety of heavily loaded Ranger was the ? rst shaft driven in? at- Chris Sitzenstock gave an overview of following close to the action and pro- high speed craft. The variable geometry able, she was custom built to tow two of of conditions onboard the Oracle Team viding instant visuals of the competition of the sponsons increases hull ef? ciency Young Americas IACC yachts simulta- USA Chase Boat, “the sea state in the as it unfolds. and aft buoyancy where the fuel, engine neously. This platform spawned a whole Bay was really everything you can imag-and passenger loads are. new class of diesel shaft commercial ine. A few miles outside the Golden Gate The Offshore Interceptor - RHIB vessels for towing and pilot boat to the South Bay it can go from square America’s Cup Umpire Boat The Rigid Hull In? atable Boat - use. six to eight-ft. waves to a mill pond. The A Willard Marine High Speed Inter- Oracle Racing Team USA Chase Boat Bay is very consistent for wind, waves ceptor was chosen by the Americas Cup Naiad In? atables of Newport produced High Speed Catamaran - Emirates and ground swell funneling through the Racing Association as the Umpire Boat two custom built 42-ft. (12.9 m) RHIBs Team New Zealand Chase Boat Golden Gate Bridge. Wash from the for the 2013 Americas Cup. The 43-ft. for Oracle Racing Team USA to support Morrelli & Melvin designed a 45-foot spectator boats did not have a great ef-(13 m) craft is powered by twin Cum- the Defender AC72 Yachts. Twin Yan- (13.7 m) 1,200 hp high-speed catamaran fect on the race course as the Bay is so mins 600 hp inboard diesel engines and mar 370hp inboard engines allow the as Tender and Chase Boat for Emirates busy with commercial traf? c and ferries. surface drive system. The Interceptor chase boat to maintain the power, agil- Team New Zealand AC72. The concept The particularly bad sections were usu-was developed for military use from a ity and endurance required to support the was developed in collaboration with ally combinations of wind against tide.”Scarab offshore racing design and can yachts through the variable conditions of ETNZ and Salthouse Boatbuilders. The We asked Chris whether protecting LeftNaiad / Oracle Team U.S. support boats.RightAmericas Cup Umpire Boat - Willard Marine 43 Assault High Speed Interceptor.Naiad In? atables of Newport42 Maritime Reporter & Engineering News MARCH 2014•MR #3 (42-49).indd 42 MR #3 (42-49).indd 42 3/4/2014 11:26:33 AM3/4/2014 11:26:33 AM