what kind of vessel and does it have auto pilot? if it has auto pilot capability's there is only one choice it simrad nss7 evo2 ...
like this one
http://www../product/boating/marine-electronics/sonars-sonar-gps-combos%7C/pc/104794380/c/104707080/sc/104588280/simrad-nss-7-evo2-with-insight/1872147.uts?destination=%2Fcatalog%2Fbrowse%2Fsonars-sonar-gps-combos%2Fsimrad%2F_%2FN-1100517%2B4294748397%2FNe-4294748397%2FNs-CATEGORY_SEQ_104588280%3FWTz_st%3DGuidedNav%26WTz_stype%3DGNU
now if there is no auto pilot and not much worried about any thing else then the hds7 gen 2 is the way to go it is a great unit so how can any one complain about it try to stay away from humming bird I hear they got bad customer service...by the way auto pilot drives the boat for you on your main motor you can also add radar to your set up is another option with simrad radar...a lot of ocean guys use it along with a few great lakes charter captains....plus there all link able to one unit so looking at one screen instead of fifty...
also the gen 2 lowrance don't got radar or wifi expansion just a head up! and is not "ais" compliant for 2016... now the simrad has a $200 rebate and only coast 1,099.00 before rebate so it will cost about 899.99... and is expandable. and does not have the aispart of it... ais is required for vessel 30 foot and over if your vessel is over 30 foot you got to step up to the simrad nss9 evo which is ais compliant which retail on that \unit is $1,249.99 with rebate of $200 you can also expand these units with wifi on the simrad and lowrance gen 3 only.... the gen two is basic and maybe not worth it? is why I bring this all up?? it like buying out date technology really out dated with the gen 2...
